Social security and files are not together.

If you are in Beijing, you are in trouble, because Beijing's new regulations require that Beijingers' files and social security must be combined with talents, while retaining talents. However, in reality, many units have social security regardless of files, and your job search is greatly restricted. You should have this psychological preparation. ...

If your file is filled with talents, your social security must also be paid by talents ... If your unit is more formal, you can't go to such a unit regardless of whether your file must go to social security.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.