Beijing social security will not be cancelled if it is not paid for three months.

If the social security account is not paid for three months, the social security account will not be cancelled;

If you are a local account, the social security account has always existed. Unless you reach retirement age and still haven't paid the social security period, you can cancel the social security and take the money you paid before. You haven't paid for it for three months. If you find a job and pay again, you can renew your insurance.

If it is your foreign account, then if you don't work locally, you can transfer the social security to your account, and the local social security can be cancelled.

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