QQ邮箱网页端登录邮箱的密码无法设置在第三方客户端（如foxmail,outlook等），或者手机端（手机邮件收发APP）上面，必须生成授权码方能设置成功。
The password for logging into the QQ mailbox on the web cannot be set on third-party clients (such as Foxmail, Outlook, etc.) or on the mobile app (mobile email sending and receiving APP). An authorization code must be generated to successfully set it.

1、打开设置-邮件-账户-添加账户
Open Settings - Email - Account - Add Account

2、添加账户, 选择“其他”账户,添加邮件账户,输入邮箱帐号，授权码，下一步
Add account, select "Other" account, add email account, enter email account, authorization code, next step

3. 进入新账户配置页面，建议选择IMAP（查看IMAP和POP不同）,

IMAP服务器/收信服务器填写：imap.qq.com （选择SSL，端口号是993）

SMTP服务器/发信服务器填写：smtp.qq.com（选择SSL，端口号是465）

（如果接收服务器选择POP类型，则POP服务器是：pop.qq.com，选择SSL，端口号是995）

点击完成，即可配置成功。

Entering the new account configuration page, it is recommended to choose IMAP

IMAP server/receiving server fill in: imap.qq.com (select SSL, port number is 993)

SMTP server/sender server fill in: smtp.qq.com (select SSL, port number is 465)

If the receiving server selects the POP type, the POP server is: pop.qq.com， Select SSL, port number is 995)

Click 'Finish' to complete the configuration successfully.