The head office is in other provinces and the branch office is in this city. Where can I pay social security?

If the company is inter-provincial, the social security of the members of the company's branches shall be insured at the headquarters:

Generally, large companies will choose to pay social security to employees in different places at headquarters. The advantage of this is that it is completely legal for the company to pay social security.

But the problem is that employees in different places can't fully enjoy the rights and interests of medical insurance and unemployment insurance in their cities.