Should Foshan social security be transferred and merged in different branches in the same urban area?

There is no need to handle social security transfer in different districts of the same city, and the social security system in the same city (listed at prefecture level) is attached. The social security agency where the new unit is located can directly register and purchase social insurance in the system (the pension insurance relationship is automatically extended), and only cross-city (prefecture-level listing) requires citizens to transfer social security (such as pension insurance).

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