Now every student has his own corresponding student status file, mostly in the form of electronic files, which will accompany a student's entire campus study career and will be converted into personal files after graduation.

Since it is a file, information statistics will be very comprehensive, including not only the very detailed personal information of students, but also the general information of students' families and relatives, which leads to the problem of counting parents' occupations that we put forward earlier.

The occupations of freelancers mainly include:

The first category is small businessmen, such as tobacco and alcohol grocery store owners, stationery and toy store owners, decoration company owners, online shop owners of shopping networks and so on.

The second category is salesmen without basic salary, such as life insurance consultants, real estate agents, advertising agents, direct sellers and so on.

The third category is professionals, such as photographers, patent agents, lawyers, accountants, dentists, technical consultants, management consultants, plumbers, electricians, hairdressers and artists.