Unless you work in the Education Bureau, the Education Bureau won't need your personnel file.

Archival science is generally a normal major of the Education Bureau, which has the authority to keep files, so it is not a big problem and will not affect your official business of taking the postgraduate entrance examination, but institutions and postgraduate entrance examinations need to provide proof of archiving. It is more reliable to store things in the talent center. The Education Bureau will not put you on record unless you are a teacher-training major and engaged in the education industry. The Normal Education Bureau will transfer your file back to the registered talents in two years! However, the policies in each region are different!