What is national social security?

According to the social insurance law and other laws and regulations, the "National Enrollment Registration Plan" aims at full coverage and accurate management of social insurance, and records, supplements and standardizes the participation of all kinds of people in social insurance through information comparison, data collection, household survey, centralized data management and dynamic update, so as to promote comprehensive and sustainable participation of the whole people.

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