I left one factory in less than half a day, and when I went to another factory, they said that I didn't stop social security, so I couldn't enter that factory unless I stopped social security.

You can report to the new unit first, and then talk to the personnel. Because the old unit didn't stop your social security, it doesn't matter if you go a month late.

In addition, if your old company doesn't stop your social security, it means that they will give you money for nothing. Don't worry, they are more anxious than you, and you don't have to worry about whether they will refund your social security. Go to the new company first ~

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