I used to work in Chengdu to buy social security, but now I want to go back to Nanchong to buy it.

You need to print the admission certificate with your ID card in the area where you used to buy social security. It should be that after you bought it, it was reduced by the company, and then your social security files should all be in the Social Security Bureau. You can take your ID card to Nanchong to buy it, go to Nanchong Social Security Bureau to handle the transfer, say that you have bought insurance before, and then hand in the admission certificate, household registration book, ID card (if you are insured by a company, you must also prove which company you work for and affix your official seal) to the transfer window. . . . Then pay the fee. . .

If a company is insured, bring a new form, a new roster and an employment contract filing form, go to the new window to add, and then go to the transfer window to transfer, and hand in the insurance certificate, household registration book and ID card (if a company is insured, you must prove which company you work for and affix the official seal) to the transfer window for direct transfer. . . . As long as it is added, you can pay the fee. .

I wish you a speedy recovery. . .

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