Shanghai gets a social security card on Saturday.

I don't know where my social security card came from. I went to the nearest medical insurance center in Shanghai to get my social security card. The telephone number is 9622 18. If someone goes to work on Saturday, I can get my social security card. You can call the local social security number 12333 for consultation before you get it.

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