What is the meaning of social security a grade

Legal subjective:

Social security is a social insurance system that guarantees citizens material help from the state and society according to the law in the case of old age, illness, work injury, unemployment and maternity, including basic old-age insurance, basic medical insurance, work-injury insurance, unemployment insurance and maternity insurance.

Objective of the law:

Article 2 of the Social Insurance Law of the People's Republic of China (PRC) states that the state establishes a social insurance system that includes basic old-age insurance, basic medical insurance, work-related injury insurance, unemployment insurance, and maternity insurance, and guarantees the right of citizens to obtain material assistance from the state and society in accordance with the law in the event of old age, sickness, work-related injuries, unemployment, and maternity, among other circumstances. Article 2 of the Regulations on the Management of Housing Provident Funds These Regulations shall apply to the payment, withdrawal, utilization, management and supervision of housing provident funds within the territory of the People's Republic of China*** and the State. The housing fund referred to in these regulations, refers to the state organs, state-owned enterprises, urban collective enterprises, foreign-invested enterprises, urban private enterprises and other urban enterprises, institutions, private non-enterprise units, social organizations (hereinafter collectively referred to as the unit) and their employees in the long term housing reserves.