Can I refund the social security I bought in Shenzhen?

You can't. Social security is the country's social security system, which provides the insured with old-age insurance, medical insurance, unemployment insurance, work injury insurance and maternity insurance. As a city in China, Shenzhen also follows this system. According to the regulations, once the insured person dies, the balance of his social security personal account can be inherited by his successor. In addition, the insured needs to leave Shenzhen to work or live in other cities, and the social security relationship can be transferred to a new city through social security transfer instead of choosing to surrender.