Whether the payment of basic pension insurance is safe can be judged by the payable years of the fund rollover balance. We call the payable years of the fund rollover balance as the fund safety factor.Whether the payment of the basic pension insurance is secure can be seen from the years of the fund rollover credit to be paid. We call the years of fund rollover credit to be paid a fund security factor.If the payment of basic endorsement insurance is safe, or cannot be judged by the number of years to pay the fund balance. We call it the number of years that payment funds roll on the balance of fund security factors.