How do foreigners in Changzhou pay social security?

Foreigners can pay social security in Changzhou.

Hukou personnel in other cities in Jiangsu Province can participate in the insurance in their own name, and they need to bring their ID card, household registration book, temporary residence permit, personal files and photos to the public employment management institution in their place of residence for custody and insurance registration. For the first time, registered permanent residents in Jiangsu Province need to apply for insurance in enterprises, and they can renew their insurance in their own names in Changzhou. You need to bring your ID card, household registration book, temporary residence permit, personal files and photos to the public employment management institution in your place of residence for safekeeping and insurance registration.

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