Shanghai Bank has been interviewed for four days, and now the human resources department needs to improve the information. What does that mean?

This means that you may be admitted. Congratulations. Generally speaking, there is only one round of interview in written test/interview for ordinary posts, and management trainees are interviewed twice. If there is a play after the interview, I will email you to improve your resume, and it will be a long wait after the improvement. Half a month at the earliest. You can call the phone number provided in the email to ask the human resources department whether your information has passed.