Beijing Social Security didn't apply for a passbook refund.

Social security card. To participate in Beijing social security, in addition to the social security card, there is also the medical insurance passbook of Bank of Beijing. As long as you are insured normally, you will always get your money back. There is a UnionPay logo in the upper right corner of the social security card: Bank of Beijing, so there is no medical insurance passbook. The card itself has financial management function, and the refund is in this card.