The empty account operation of social security fund is mainly the personal account before 1995, which is what we usually call the deemed payment period. Individuals who fail to pay the fee before 1995 shall be deemed to have paid the fee in full. This is part of it.

In addition, China's pension insurance accounts are not managed separately according to individual accounts and overall accounts, and many local overall funds received by retirees are insufficient to be drawn, so they are temporarily paid from other people's personal accounts.

The trillions of insurance funds you mentioned include all individuals and overall planning. In fact, if you do a personal account, it will cost more than one trillion yuan, not to mention the normal operation of a co-ordinated fund.

According to preliminary estimates, the gap of China's endowment insurance fund exceeds 5 trillion.