The account balance of the social security card is the personal account of the social security applicant, that is, the monthly social security pension amount: salary base *11%*1February.
This is how the balance over the years has been accumulated.
Usually, the monthly social security pension payment is 20% for the company and 8% for the individual, of which 1 1% is credited to the individual account and 17% is credited to the social security pooling account (the so-called cauldron).