The Social Security Law has made it very clear that social security is to provide basic material help (economic help) to all citizens when they are too old to work and need medical treatment when they are sick. Social security is partly paid by citizens and partly subsidized by the state. Therefore, it is different from ordinary commercial insurance, it is a high-yield insurance product, and the terms are set for all citizens, unlike commercial insurance, which is accidentally fooled. So buying social security is the safest way to protect!