Social security of trainee lawyers

You are not registered in Shanghai, so you can only pay a social security called comprehensive insurance for foreigners, which is equal to low-income households. It depends on how long you plan to pay it in the future. If you are still young, or for the sake of documents, pay it for a year or two first. If you plan to spend a long time, then the province you want to choose is not where you want to pay, but whether you will retire in the future and whether any provinces are willing to accept it. Shanghai's social security is afraid of being transferred to other provinces, and it will not be collected, or it will cost a lot of money.