Is social security paid in other places, of course, for the habitual residence?

After consulting China Travel. The registered permanent residence is our usual place of residence, and the social security is paid by the employer for the workers at the construction site. Even if they are not in one place, there is no conflict and no problem.

Social security is social insurance, which means that the state forces most members of society to participate in order to prevent and share social risks such as old age, unemployment, illness and death, and realize social security.