China has implemented the system of voluntary blood donation for more than 20 years. At present, almost all blood used for medical purposes comes from unpaid blood donors, and more than14 million people participate in unpaid blood donation every year. Voluntary blood donation has become very popular.

Therefore, unpaid blood donation can no longer be linked to promotion, joining the party and evaluating professional titles, which is too common.

Now college students are the main force of unpaid blood donation. Those who can't evaluate their professional titles and potential professional titles in the education sector, what they have already participated in, can't be linked to the future.