I do not know where is the problem, Baidu always prompt need to verify

[asdwyujian]

I do not know where is the problem, Baidu always prompt need to verify
https://www.baidu.com/

var engine = EngineBuilder.New()
.UseJint()
.Build();
engine.UseKnownUserAgent(KnownUserAgents.Windows_Firefox);

var page = await engine.OpenUrl("https://www.baidu.com");

engine.WaitDocumentLoad();
var document = page.Document;

var input = document.WaitId("kw") as HtmlInputElement;
input.Value = "123";

var button = document.WaitId("su") as HtmlInputElement;
button.Click();

Thread.Sleep(5000);

document = engine.Document;
var html = document.DocumentElement.OuterHTML;