Are there any immigrants who have returned social security? What is the process?

Social security withdrawal is limited to two situations: 1, the insured person dies-the agent submits the death certificate and goes through the withdrawal and transfer procedures at the social security center and the labor bureau; 2. The insured emigrates to other countries-provide relevant foreign immigration department certificates, and if I apply for retirement pension in China, I can withdraw it in one lump sum; In addition, there are cases of retirement: the insured reaches the statutory retirement age stipulated by the state to go through retirement procedures, or handle toxic operations and retire early due to illness; Although I no longer pay the old-age pension and unemployment insurance when I am working (of course, some individuals still need to deduct money on a monthly basis for large-scale mutual assistance), I still enjoy the monthly pension and the reimbursement of retirement medical insurance, so I can't be regarded as withdrawing from social security.