Warning:：If you have bound your cell phone number or email, you can find your password here by yourself, which can be explained by operation. If you have neither a cell phone number nor an email address bound, you need to hold valid certificates (ID card, Yulanka, student card, etc.) to the service hall of the Internet Letter Center (external service time: Monday to Friday, 8:00-15:00, no noon break) to retrieve the password.