Cancellation of personal social security account in Foshan

The social security account will not be cancelled. The social security account number is your ID number, which can be transferred with you. Please consult the local social security bureau for details.

The above answer is for the unit, not for the individual. Units that collapse can be cancelled, but individuals can be transferred, and can only be cancelled if they are dead.

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