diff --git a/.gitignore b/.gitignore
index bdf87c8..b7bcbc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,9 +19,11 @@ bin/
 
 ### IntelliJ IDEA ###
 .idea
+.kotlin
 *.iws
 *.iml
 *.ipr
+*.log
 out/
 !**/src/main/**/out/
 !**/src/test/**/out/
diff --git a/cloudapi-model/src/main/kotlin/cn/edu/buaa/scs/model/TicketResponse.kt b/cloudapi-model/src/main/kotlin/cn/edu/buaa/scs/model/TicketResponse.kt
new file mode 100644
index 0000000..415abd8
--- /dev/null
+++ b/cloudapi-model/src/main/kotlin/cn/edu/buaa/scs/model/TicketResponse.kt
@@ -0,0 +1,13 @@
+package cn.edu.buaa.scs.model
+
+/**
+ *
+ * @param ticket 访问凭证
+ * @param host 服务器主机地址
+ */
+data class TicketResponse(
+    /* 访问凭证 */
+    val ticket: kotlin.String? = null,
+    /* 服务器主机地址 */
+    val host: kotlin.String? = null
+)
diff --git a/cloudapi-web/build.gradle.kts b/cloudapi-web/build.gradle.kts
index 04a6fd3..cbf338b 100644
--- a/cloudapi-web/build.gradle.kts
+++ b/cloudapi-web/build.gradle.kts
@@ -43,6 +43,8 @@ dependencies {
     implementation("io.ktor:ktor-server-status-pages:$ktor_version")
     testImplementation("io.ktor:ktor-server-tests-jvm:$ktor_version")
     testImplementation("io.ktor:ktor-server-test-host-jvm:$ktor_version")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-slf4j:1.7.3")
+    implementation("ch.qos.logback:logback-classic:1.4.11")
 
     // Redis
     implementation("io.lettuce:lettuce-core:6.1.5.RELEASE")
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/auth/Token.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/auth/Token.kt
index bcb5e83..48b8f20 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/auth/Token.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/auth/Token.kt
@@ -68,16 +68,16 @@ fun fetchToken(call: ApplicationCall) {
         else -> {
             // TODO 后续兼容JWT校验
 
-            // 1. try to get token from cookies
-            possibleTokenKey.firstNotNullOfOrNull { call.request.cookies[it] } ?:
-
-            // 2. try to get token from headers
+            // 1. try to get token from headers
             possibleTokenKey.firstNotNullOfOrNull {
                 call.request.headers[it]?.let { auth ->
                     if (auth.startsWith("Bearer")) auth.split(" ")[1] else auth
                 }
             } ?:
 
+            // 2. try to get token from cookies
+            possibleTokenKey.firstNotNullOfOrNull { call.request.cookies[it] } ?:
+
             // 3. try to get token from query parameters
             possibleTokenKey.firstNotNullOfOrNull { call.request.queryParameters[it] }
 
@@ -110,7 +110,7 @@ fun fetchToken(call: ApplicationCall) {
         // redis uuid token
         authRedis.checkToken(token) ?:
         // error
-        throw throw AuthorizationException("incorrect token")
+        throw throw AuthorizationException("登录已过期，请重新登录")
 
     val user = User.id(userId)
     setUser(user)
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/ChatHistoryItem.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/ChatHistoryItem.kt
new file mode 100644
index 0000000..fc94336
--- /dev/null
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/ChatHistoryItem.kt
@@ -0,0 +1,30 @@
+/**
+* cloudapi_v2
+* buaa scs cloud api v2
+*
+* The version of the OpenAPI document: 2.0
+* Contact: loheagn@icloud.com
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package cn.edu.buaa.scs.controller.models
+
+
+/**
+ * 
+ * @param id 
+ * @param chatId 
+ * @param updateTime 
+ * @param title 
+ * @param top 
+ */
+data class ChatHistoryItem(
+    val id: kotlin.Int? = null,
+    val chatId: kotlin.String? = null,
+    val updateTime: kotlin.Long? = null,
+    val title: kotlin.String? = null,
+    val top: kotlin.Boolean? = null
+) 
+
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/CreateUserRequest.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/CreateUserRequest.kt
index 04d6a3a..d5c4ae8 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/CreateUserRequest.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/CreateUserRequest.kt
@@ -18,6 +18,7 @@ package cn.edu.buaa.scs.controller.models
  * @param departmentId 所在单位
  * @param role 1 for student, 2 for teacher, 4 for admin
  * @param name 姓名
+ * @param email 邮箱
  */
 data class CreateUserRequest(
     /* 学工号 */
@@ -27,6 +28,8 @@ data class CreateUserRequest(
     /* 1 for student, 2 for teacher, 4 for admin */
     val role: kotlin.Int,
     /* 姓名 */
-    val name: kotlin.String? = null
+    val name: kotlin.String? = null,
+    /* 邮箱 */
+    val email: kotlin.String? = null
 ) 
 
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/GetChatRecordsRequest.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/GetChatRecordsRequest.kt
new file mode 100644
index 0000000..8ab9aa2
--- /dev/null
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/GetChatRecordsRequest.kt
@@ -0,0 +1,30 @@
+/**
+* cloudapi_v2
+* buaa scs cloud api v2
+*
+* The version of the OpenAPI document: 2.0
+* Contact: loheagn@icloud.com
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package cn.edu.buaa.scs.controller.models
+
+
+/**
+ * 
+ * @param chatId 
+ * @param appId 
+ * @param offset 
+ * @param pageSize 
+ * @param loadCustomFeedbacks 
+ */
+data class GetChatRecordsRequest(
+    val chatId: kotlin.String,
+    val appId: kotlin.String? = null,
+    val offset: kotlin.Int? = null,
+    val pageSize: kotlin.Int? = null,
+    val loadCustomFeedbacks: kotlin.Boolean? = null
+) 
+
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/PatchUserRequest.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/PatchUserRequest.kt
index fc55485..9081152 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/PatchUserRequest.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/PatchUserRequest.kt
@@ -17,10 +17,12 @@ package cn.edu.buaa.scs.controller.models
  * @param name 
  * @param email 
  * @param nickname 
+ * @param departmentId 
  */
 data class PatchUserRequest(
     val name: kotlin.String? = null,
     val email: kotlin.String? = null,
-    val nickname: kotlin.String? = null
+    val nickname: kotlin.String? = null,
+    val departmentId: kotlin.Int? = null
 ) 
 
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/TicketResponse.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/TicketResponse.kt
new file mode 100644
index 0000000..6052493
--- /dev/null
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/models/TicketResponse.kt
@@ -0,0 +1,26 @@
+/**
+* cloudapi_v2
+* buaa scs cloud api v2
+*
+* The version of the OpenAPI document: 2.0
+* Contact: loheagn@icloud.com
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package cn.edu.buaa.scs.controller.models
+
+
+/**
+ * 
+ * @param ticket 访问凭证
+ * @param host 服务器主机地址
+ */
+data class TicketResponse(
+    /* 访问凭证 */
+    val ticket: kotlin.String? = null,
+    /* 服务器主机地址 */
+    val host: kotlin.String? = null
+) 
+
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Monitoring.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Monitoring.kt
index 242c4d4..bd61f73 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Monitoring.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Monitoring.kt
@@ -41,7 +41,7 @@ fun Application.configureMonitoring() {
                 pathDescription = "",
                 headers = call.request.headers.toMap(),
                 version = version,
-                realIp = call.request.headers["X-Custom-Remote-Addr"] ?: call.request.origin.host,
+                realIp = call.request.headers["X-Custom-Remote-Addr"] ?: call.request.origin.localHost,
                 userAgent = userAgent,
             )
             val logRecordResp = LogRecordResp(
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Routing.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Routing.kt
index 2afe8c2..5cd8445 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Routing.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/controller/plugins/Routing.kt
@@ -11,6 +11,7 @@ fun Application.configureRouting() {
         route("/api/v2") {
             authRoute()
             userRoute()
+            chatRoute()
             courseRoute()
             experimentRoute()
             fileRoute()
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/BusinessKubeClient.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/BusinessKubeClient.kt
index 4726cf9..9982db0 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/BusinessKubeClient.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/BusinessKubeClient.kt
@@ -91,7 +91,7 @@ spec:
 apiVersion: cloudapi.scs.buaa.edu.cn/v1alpha1
 kind: ResourcePool
 metadata:
-  name: personal-$userId
+  name: personal-${userId.lowercase()}
   labels:
     owner: $userId
 spec:
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/crd/v1alpha1/VirtualMachine.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/crd/v1alpha1/VirtualMachine.kt
index 31600f9..295b6df 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/crd/v1alpha1/VirtualMachine.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/kube/crd/v1alpha1/VirtualMachine.kt
@@ -168,6 +168,8 @@ class VirtualMachineReconciler(val client: KubernetesClient) : Reconciler<Virtua
                         if (createVmProcessMutex.tryLock(vm)) {
                             try {
                                 vmClient.createVM(vm.spec.toCreateVmOptions()).getOrThrow()
+                            } catch (e: Throwable) {
+                                null
                             } finally {
                                 createVmProcessMutex.unlock(vm)
                             }
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/model/ChatHistory.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/model/ChatHistory.kt
new file mode 100644
index 0000000..d550be9
--- /dev/null
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/model/ChatHistory.kt
@@ -0,0 +1,34 @@
+package cn.edu.buaa.scs.model
+
+import org.ktorm.database.Database
+import org.ktorm.entity.Entity
+import org.ktorm.entity.sequenceOf
+import org.ktorm.schema.*
+
+interface ChatHistory : Entity<ChatHistory>, IEntity {
+    var id: Int
+    var userId: String
+    var chatId: String
+    var updateTime: Long
+    var title: String
+    var top: Boolean
+
+    companion object : Entity.Factory<ChatHistory>()
+
+    override fun entityId(): IntOrString {
+        return IntOrString(this.id)
+    }
+}
+
+object ChatHistories : Table<ChatHistory>("chat_history") {
+    val id = int("id").primaryKey().bindTo { it.id }
+    val userId = varchar("userId").bindTo { it.userId }
+    val chatId = varchar("chatId").bindTo { it.chatId }
+    val updateTime = long("updateTime").bindTo { it.updateTime }
+    val title = varchar("title").bindTo { it.title }
+    val top = boolean("top").bindTo { it.top }
+}
+
+@Suppress("unused")
+val Database.chatHistory
+    get() = this.sequenceOf(ChatHistories)
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Admin.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Admin.kt
index 9025a37..45b2b89 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Admin.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Admin.kt
@@ -16,8 +16,9 @@ fun Route.adminRoute() {
                 val req = call.receive<CreateUserRequest>()
                 val role = UserRole.fromLevel(req.role)
                 val name = req.name
+                val email = req.email
                 val departmentId = req.departmentId
-                call.respond(convertUserModel(call.admin.addUser(req.id, name, role, departmentId)))
+                call.respond(convertUserModel(call.admin.addUser(req.id, name, role, email, departmentId)))
             }
 
             delete {
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Auth.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Auth.kt
index b3034c9..b2d5abe 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Auth.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Auth.kt
@@ -39,7 +39,7 @@ fun Route.authRoute() {
 
     route("buaaSSOLogin") {
         post {
-            val ssoToken = call.request.queryParameters["ssoToken"] ?: throw BadRequestException("ssoToken is required")
+            val ssoToken = call.request.queryParameters["ssoToken"] ?: throw BadRequestException("请传入统一认证 token")
             call.respond(
                 call.auth.buaaSSOLogin(ssoToken)
             )
@@ -55,8 +55,8 @@ fun Route.authRoute() {
     route("/tokenInfo") {
         post {
             val req = call.receiveParameters()
-            val token = req["token"] ?: throw BadRequestException("token is required")
-            val service = req["service"] ?: throw BadRequestException("service is required")
+            val token = req["token"] ?: throw BadRequestException("请传入统一认证 token")
+            val service = req["service"] ?: throw BadRequestException("请传入统一认证服务名")
             call.respond(
                 call.auth.getTokenInfo(token, service)
             )
@@ -65,9 +65,9 @@ fun Route.authRoute() {
 
     route("/checkPermission") {
         get {
-            val entityType = call.parameters["entityType"] ?: throw BadRequestException("entityType is required")
-            val entityId = call.parameters["entityId"] ?: throw BadRequestException("entityId is required")
-            val action = call.parameters["action"] ?: throw BadRequestException("action is required")
+            val entityType = call.parameters["entityType"] ?: throw BadRequestException("请传入对象类型")
+            val entityId = call.parameters["entityId"] ?: throw BadRequestException("请传入对象Id")
+            val action = call.parameters["action"] ?: throw BadRequestException("请传入动作")
             call.respond(call.auth.checkPermission(entityType, entityId, action))
         }
     }
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Chat.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Chat.kt
new file mode 100644
index 0000000..d48406e
--- /dev/null
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Chat.kt
@@ -0,0 +1,32 @@
+package cn.edu.buaa.scs.route
+
+import cn.edu.buaa.scs.controller.models.ChatHistoryItem
+import cn.edu.buaa.scs.controller.models.GetChatRecordsRequest
+import cn.edu.buaa.scs.service.chat
+import cn.edu.buaa.scs.utils.userId
+import io.ktor.server.application.*
+import io.ktor.server.request.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+
+fun Route.chatRoute() {
+    route("/chat") {
+        route("/history") {
+            get {
+                call.respond(call.chat.getChatHistoryByUserId(call.userId()))
+            }
+
+            post {
+                val chatHistoryItem = call.receive<ChatHistoryItem>()
+                call.chat.createChatHistory(call.userId(), chatHistoryItem)
+                call.respond("OK")
+            }
+        }
+
+        post("/records") {
+            val requestBody = call.receive<GetChatRecordsRequest>()
+            val records = call.chat.getChatRecords(requestBody)
+            call.respond(records)
+        }
+    }
+}
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Experiment.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Experiment.kt
index 95eb0e9..08483fa 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Experiment.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Experiment.kt
@@ -55,6 +55,12 @@ fun Route.experimentRoute() {
                 call.respond(call.convertExperimentResponse(experiment))
             }
 
+            delete {
+                val experimentId = call.getExpIdFromPath()
+                call.experiment.deleteById(experimentId)
+                call.respond("OK")
+            }
+
             route("/assignments") {
                 get {
                     call.respond(
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Vm.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Vm.kt
index c9441e9..8bd4c9e 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Vm.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/route/Vm.kt
@@ -43,6 +43,11 @@ fun Route.vmRoute() {
                 }
             }
 
+            post("/ticket") {
+                val vmId = call.getVmIdFromPath()
+                val ticketResponse = call.vm.getWebTicket(vmId)
+                call.respond(ticketResponse)
+            }
         }
 
         route("/template") {
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Admin.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Admin.kt
index b25e924..a87d6ee 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Admin.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Admin.kt
@@ -17,12 +17,12 @@ val ApplicationCall.admin: AdminService
 class AdminService(val call: ApplicationCall) : IService {
     companion object : IService.Caller<AdminService>()
 
-    fun addUser(id: String, name: String?, role: UserRole, departmentId: Int): User {
+    fun addUser(id: String, name: String?, role: UserRole, email: String?, departmentId: Int): User {
         if (!call.user().isAdmin()) {
             throw AuthorizationException("only admin can add user")
         }
 
-        return User.createNewUnActiveUser(id, name, role, departmentId)
+        return User.createNewUnActiveUser(id, name, role, email, departmentId)
     }
 
     fun deleteUsers(userIds: List<String>) {
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Auth.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Auth.kt
index 5656260..1b5685c 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Auth.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Auth.kt
@@ -73,11 +73,11 @@ class AuthService(val call: ApplicationCall) : IService {
     ): LoginUserResponse {
         // check useId
         if (!mysql.users.exists { it.id.eq(userId) }) {
-            throw BadRequestException("")
+            throw BadRequestException("用户名或密码错误")
         }
         // check password
         val user = mysql.users.find { it.id.eq(userId) and it.password.eq(passwordHash) }
-            ?: throw BadRequestException("")
+            ?: throw BadRequestException("用户名或密码错误")
         // check active
         if (!user.isAccepted) {
             throw BadRequestException("账号未激活，或信息不完整，请重新激活账户")
@@ -194,7 +194,7 @@ class AuthService(val call: ApplicationCall) : IService {
     fun sendActiveEmail(id: String, name: String, email: String) {
         val user = User.id(id)
         if (user.isAccepted) {
-            throw cn.edu.buaa.scs.error.BadRequestException("the user is already active")
+            throw cn.edu.buaa.scs.error.BadRequestException("用户已经激活")
         }
         val token = "${user.id}${user.password}${System.currentTimeMillis()}".md5() + UlidCreator.getUlid().toString()
 
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Chat.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Chat.kt
new file mode 100644
index 0000000..8b62c60
--- /dev/null
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Chat.kt
@@ -0,0 +1,78 @@
+package cn.edu.buaa.scs.service
+
+import cn.edu.buaa.scs.controller.models.ChatHistoryItem
+import cn.edu.buaa.scs.controller.models.GetChatRecordsRequest
+import cn.edu.buaa.scs.model.*
+import cn.edu.buaa.scs.storage.mysql
+import cn.edu.buaa.scs.utils.HttpClientWrapper
+import io.ktor.client.*
+import io.ktor.client.engine.cio.*
+import io.ktor.client.plugins.*
+import io.ktor.client.plugins.contentnegotiation.*
+import io.ktor.client.request.*
+import io.ktor.http.*
+import io.ktor.serialization.jackson.*
+import io.ktor.server.application.*
+import org.ktorm.dsl.*
+import org.ktorm.entity.*
+
+val ApplicationCall.chat
+    get() = ChatService.getSvc(this) { ChatService(this) }
+
+class ChatService(val call: ApplicationCall) : IService {
+    companion object : IService.Caller<ChatService>()
+
+    internal val client by lazy {
+        HttpClientWrapper(
+            HttpClient(CIO) {
+                install(ContentNegotiation) { // 确保 JSON 序列化功能可用
+                    jackson()
+                }
+                defaultRequest {
+                    header(HttpHeaders.Authorization, "Bearer fastgpt-sbHq9MGmKbijSJZe3l43BcFWUxNlkcISo1SSBqAHKsqXv8bGQoSIGh28Vw4Dryeu")
+                }
+            },
+            basePath = "http://10.251.254.178:3000/api"
+        )
+    }
+
+    // 获取指定用户的聊天记录
+    fun getChatHistoryByUserId(userId: String): List<ChatHistoryItem> {
+        return mysql.chatHistory.filter { it.userId eq userId }
+            .map { convertToChatHistoryItem(it) }.toList()
+    }
+
+    // 创建新的聊天记录
+    fun createChatHistory(userId: String, chatHistoryItem: ChatHistoryItem): Int {
+        return mysql.insertAndGenerateKey(ChatHistories) {
+            set(ChatHistories.userId, userId)
+            set(ChatHistories.chatId, chatHistoryItem.chatId)
+            set(ChatHistories.updateTime, chatHistoryItem.updateTime)
+            set(ChatHistories.title, chatHistoryItem.title)
+            set(ChatHistories.top, chatHistoryItem.top)
+        } as Int
+    }
+
+    // 获取聊天记录
+    suspend fun getChatRecords(request: GetChatRecordsRequest): String {
+        val body = GetChatRecordsRequest(
+            chatId = request.chatId,
+            appId = "679e3b3b5fbd929e37095abc",
+            offset = 0,
+            pageSize = 30,
+            loadCustomFeedbacks = false,
+        )
+        val response = client.post<String>("/core/chat/getPaginationRecords", body)
+        return response.getOrThrow()
+    }
+
+    private fun convertToChatHistoryItem(chatHistory: ChatHistory): ChatHistoryItem {
+        return ChatHistoryItem(
+            id = chatHistory.id,
+            chatId = chatHistory.chatId,
+            updateTime = chatHistory.updateTime,
+            title = chatHistory.title,
+            top = chatHistory.top
+        )
+    }
+}
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Course.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Course.kt
index bbe7d4d..39442fc 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Course.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Course.kt
@@ -187,7 +187,7 @@ class CourseService(val call: ApplicationCall) : IService {
         // make sure students exist
         studentIdList.forEachAsync { studentId ->
             if (!mysql.users.exists { it.id.inList(studentId.lowerUpperNormal()) }) {
-                User.createNewUnActiveUser(studentId, null, UserRole.STUDENT, 0)
+                User.createNewUnActiveUser(studentId, null, UserRole.STUDENT, "", 0)
             }
         }
 
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Experiment.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Experiment.kt
index 2b97ea6..172d079 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Experiment.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Experiment.kt
@@ -69,6 +69,10 @@ class ExperimentService(val call: ApplicationCall) : IService, FileService.FileD
         return experiment
     }
 
+    fun deleteById(expId: Int) {
+        mysql.delete(Experiments) { it.id eq expId }
+    }
+
     private fun patchExperimentPeerInfo(
         experiment: Experiment,
         peerDescription: String?,
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Project.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Project.kt
index 4461565..79bf2e7 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Project.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Project.kt
@@ -68,7 +68,7 @@ class ProjectService(val call: ApplicationCall) : IService, FileService.FileDeco
     }
 
     suspend fun createUser(userID: String) {
-        createUser(User.id(userID))
+//        createUser(User.id(userID))
     }
 
     suspend fun createUser(user: User) {
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/User.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/User.kt
index 61c94f7..6463b65 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/User.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/User.kt
@@ -24,11 +24,12 @@ fun User.Companion.getUerListByIdList(idList: List<String>): List<User> {
     else mysql.users.filter { it.id.inList(idList) }.toList()
 }
 
-fun User.Companion.createNewUnActiveUser(id: String, name: String?, role: UserRole, departmentId: Int): User {
+fun User.Companion.createNewUnActiveUser(id: String, name: String?, role: UserRole, email: String?, departmentId: Int): User {
     val user = User {
         this.id = id
         this.name = name ?: "未激活用户"
         this.role = role
+        this.email = email ?: ""
         this.departmentId = departmentId
     }
     mysql.users.add(user)
@@ -102,6 +103,9 @@ class UserService(val call: ApplicationCall) : IService {
         if (req.nickname != null) {
             user.nickName = req.nickname
         }
+        if (req.departmentId != null) {
+            user.departmentId = req.departmentId
+        }
 
         user.flushChanges()
     }
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Vm.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Vm.kt
index 3934853..dd3f4c0 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Vm.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/service/Vm.kt
@@ -54,6 +54,10 @@ class VmService(val call: ApplicationCall) : IService {
         return sfClient.getHosts().getOrThrow()
     }
 
+    suspend fun getWebTicket(uuid: String): TicketResponse {
+        return vmClient.getWebTicket(uuid).getOrThrow()
+    }
+
     fun getPersonalVms(): List<VirtualMachineCrd> {
         val vmApplyList =
             mysql.vmApplyList.filter { ((it.studentId eq call.userId()) or (it.teacherId eq call.userId())) and (it.experimentId eq 0) }
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/utils/ApplicationCall.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/utils/ApplicationCall.kt
index 57403aa..bc15f38 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/utils/ApplicationCall.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/utils/ApplicationCall.kt
@@ -3,10 +3,13 @@
 package cn.edu.buaa.scs.utils
 
 import cn.edu.buaa.scs.model.User
+import io.ktor.http.*
 import io.ktor.server.application.*
 import io.ktor.server.plugins.*
 import io.ktor.server.plugins.callid.*
 import io.ktor.server.request.*
+import io.ktor.server.response.*
+import io.ktor.utils.io.*
 
 fun ApplicationCall.headerString(key: String): String =
     this.request.header(key) ?: throw BadRequestException("missing header: $key")
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/VMModule.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/VMModule.kt
index 3d8d94a..8069dbb 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/VMModule.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/VMModule.kt
@@ -5,7 +5,7 @@ import cn.edu.buaa.scs.vm.sangfor.SangforClient
 import cn.edu.buaa.scs.vm.vcenter.VCenterClient
 import io.ktor.server.application.*
 
-lateinit var vmClient: IVMClient
+lateinit var vmClient: VCenterClient
 lateinit var sfClient: SangforClient
 
 @Suppress("unused")
diff --git a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/vcenter/VCenterClient.kt b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/vcenter/VCenterClient.kt
index 34acb48..dc2bffe 100644
--- a/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/vcenter/VCenterClient.kt
+++ b/cloudapi-web/src/main/kotlin/cn/edu/buaa/scs/vm/vcenter/VCenterClient.kt
@@ -3,7 +3,10 @@ package cn.edu.buaa.scs.vm.vcenter
 import cn.edu.buaa.scs.config.globalConfig
 import cn.edu.buaa.scs.error.NotFoundException
 import cn.edu.buaa.scs.model.Host
+import cn.edu.buaa.scs.model.TicketResponse
 import cn.edu.buaa.scs.model.VirtualMachine
+import cn.edu.buaa.scs.model.virtualMachines
+import cn.edu.buaa.scs.storage.mysql
 import cn.edu.buaa.scs.utils.HttpClientWrapper
 import cn.edu.buaa.scs.utils.schedule.waitForDone
 import cn.edu.buaa.scs.vm.*
@@ -14,6 +17,9 @@ import io.ktor.client.plugins.contentnegotiation.*
 import io.ktor.client.request.*
 import io.ktor.http.*
 import io.ktor.serialization.jackson.*
+import org.ktorm.dsl.and
+import org.ktorm.dsl.eq
+import org.ktorm.entity.find
 import org.ktorm.jackson.KtormModule
 
 object VCenterClient : IVMClient {
@@ -51,10 +57,12 @@ object VCenterClient : IVMClient {
         client.get<VirtualMachine>("/vm/$uuid").getOrThrow()
     }
 
+    suspend fun getWebTicket(uuid: String): Result<TicketResponse> = runCatching {
+        client.post<TicketResponse>("/vm/$uuid/ticket").getOrThrow()
+    }
+
     override suspend fun getVMByName(name: String, applyId: String): Result<VirtualMachine> = runCatching {
-        getAllVMs().getOrElse { listOf() }.find { vm ->
-            vm.name == name && vm.applyId == applyId
-        } ?: throw vmNotFound(name)
+        mysql.virtualMachines.find { (it.name eq name) and (it.applyId eq applyId) }?: throw vmNotFound(name)
     }
 
     override suspend fun powerOnSync(uuid: String): Result<Unit> = runCatching {
diff --git a/gradle.properties b/gradle.properties
index 6f11cfc..c1bbeab 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
 kotlin_version=1.7.10
-kotlin.code.style=official
+kotlin.code.style=official
\ No newline at end of file
diff --git a/openapi/cloudapi_v2.yaml b/openapi/cloudapi_v2.yaml
index d7f963a..6ca0edb 100644
--- a/openapi/cloudapi_v2.yaml
+++ b/openapi/cloudapi_v2.yaml
@@ -90,6 +90,22 @@ paths:
               $ref: '#/components/schemas/PutExperimentRequest'
       security:
         - Authorization: []
+    delete:
+      summary: 删除一项实验（作业）
+      tags:
+        - 作业
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/ExperimentResponse'
+      operationId: delete-experiment-experimentId
+      description: 删除一项实验（作业）
+      security:
+        - Authorization: [ ]
+      parameters: [ ]
   '/experiment/{experimentId}/assignment':
     parameters:
       - schema:
@@ -1006,6 +1022,27 @@ paths:
           in: query
           name: sync
           description: 表示该请求是否同步返回，默认为false，即默认异步。client需要在后续查询具体的执行情况
+  '/vm/{vmId}/ticket':
+    parameters:
+      - schema:
+          type: string
+        name: vmId
+        in: path
+        required: true
+        description: vm uuid
+    post:
+      summary: 创建 Web 访问凭证
+      tags:
+        - 虚拟机
+      description: 创建虚拟机的 Web 访问凭证，返回 ticket 和 host。
+      operationId: post-vm-vmId-ticket
+      responses:
+        '200':
+          description: 成功创建访问凭证
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/TicketResponse'
   /vms:
     get:
       summary: get Virtual Machine list
@@ -2709,6 +2746,41 @@ paths:
       description: 教师获取自己的全部助教
       security:
         - Authorization: []
+  /chat/history:
+    get:
+      summary: 按用户 id 获取历史聊天
+      responses:
+        '200':
+          description: 聊天历史获取成功
+          content:
+            application/json:
+              schema:
+                type: array
+                items:
+                  $ref: '#/components/schemas/ChatHistoryItem'
+    post:
+      summary: 新增一条聊天记录
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/ChatHistoryItem'
+      responses:
+        '200':
+          description: 成功保存历史记录
+  /chat/records:
+    post:
+      summary: 获取某个聊天的聊天记录
+      requestBody:
+        required: true
+        content:
+          application/json:
+            schema:
+              $ref: "#/components/schemas/GetChatRecordsRequest"
+      responses:
+        "200":
+          description: 成功获取到聊天记录
 components:
   schemas:
     AssignmentResponse:
@@ -4731,6 +4803,9 @@ components:
           type: integer
           format: int32
           description: '所在单位'
+        email:
+          type: string
+          description: '邮箱'
         role:
           type: integer
           format: int32
@@ -4806,6 +4881,9 @@ components:
           type: string
         nickname:
           type: string
+        departmentId:
+          type: integer
+          format: int32
     ChangePasswordRequest:
       title: ChangePasswordRequest
       x-stoplight:
@@ -4891,6 +4969,44 @@ components:
           type: string
       required:
         - studentId
+    ChatHistoryItem:
+      type: object
+      properties:
+        id:
+          type: integer
+        chatId:
+          type: string
+        updateTime:
+          type: integer
+          format: int64
+        title:
+          type: string
+        top:
+          type: boolean
+    GetChatRecordsRequest:
+      type: object
+      required:
+        - chatId
+      properties:
+        appId:
+          type: string
+        chatId:
+          type: string
+        offset:
+          type: integer
+        pageSize:
+          type: integer
+        loadCustomFeedbacks:
+          type: boolean
+    TicketResponse:
+      type: object
+      properties:
+        ticket:
+          type: string
+          description: 访问凭证
+        host:
+          type: string
+          description: 服务器主机地址
   securitySchemes:
     Authorization:
       type: apiKey
diff --git a/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/Connection.kt b/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/Connection.kt
index 02ac38f..fce0932 100644
--- a/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/Connection.kt
+++ b/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/Connection.kt
@@ -4,6 +4,7 @@ import com.vmware.photon.controller.model.adapters.vsphere.util.connection.Conne
 import com.vmware.photon.controller.model.adapters.vsphere.util.connection.GetMoRef
 import com.vmware.vim25.ManagedObjectReference
 import com.vmware.vim25.RetrieveOptions
+import com.vmware.vim25.VirtualMachineTicket
 
 fun Connection.getMoRef(): GetMoRef {
     return GetMoRef(this)
diff --git a/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterRoute.kt b/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterRoute.kt
index fb6f4b2..f85f2db 100644
--- a/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterRoute.kt
+++ b/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterRoute.kt
@@ -59,6 +59,11 @@ fun Application.vcenterRouting() {
                     VCenterWrapper.convertVMToTemplate(call.getVmUuid()).getOrThrow()
                     call.respond("OK")
                 }
+
+                post("/ticket") {
+                    val ticketResponse = VCenterWrapper.getWebTicket(call.getVmUuid())
+                    call.respond(ticketResponse)
+                }
             }
 
             route("/health") {
diff --git a/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterWrapper.kt b/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterWrapper.kt
index cdeef06..37cac5a 100644
--- a/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterWrapper.kt
+++ b/vcenter/src/main/kotlin/cn/edu/buaa/scs/vcenter/VCenterWrapper.kt
@@ -4,6 +4,7 @@ import cn.edu.buaa.scs.config.globalConfig
 import cn.edu.buaa.scs.model.VirtualMachine
 import cn.edu.buaa.scs.model.VirtualMachineExtraInfo
 import cn.edu.buaa.scs.model.applyExtraInfo
+import cn.edu.buaa.scs.model.TicketResponse
 import cn.edu.buaa.scs.utils.jsonMapper
 import cn.edu.buaa.scs.utils.logger
 import cn.edu.buaa.scs.vm.ConfigVmOptions
@@ -360,6 +361,17 @@ object VCenterWrapper {
         }.getOrThrow()
     }
 
+    suspend fun getWebTicket(uuid: String): TicketResponse {
+        return baseSyncTask { connection ->
+            val vmRef = connection.getVmRefByUuid(uuid)
+            val vmTicket = connection.vimPort.acquireTicket(vmRef, "webmks")
+            TicketResponse(
+                ticket = vmTicket.ticket,
+                host = vmTicket.host
+            )
+        }.getOrThrow()
+    }
+
     suspend fun convertVMToTemplate(uuid: String): Result<Unit> {
         return baseSyncTask { connection ->
             val vmRef = connection.getVmRefByUuid(uuid)