Do overseas students or immigrants need personnel files in Chinese mainland?

The materials needed for studying abroad are different from those needed by immigrants. But I don't need your personnel file ~ my personnel file is still lying at home. . . .

If you want to study abroad, you need a birth certificate at most, which can be from a hospital or a notary office. It is best to prove who your parents are. . . You don't need a criminal certificate to apply for any kind of visa.

If you immigrate, you need a birth certificate and proof of no criminal record, property and investment. . . It has nothing to do with personnel files ~ Unless you are a skilled immigrant, you need work certificates in related fields at most ~