The first few years of social security to pay more after a few years to pay less, how to get money later?

Parents, social security in the first few years to pay more after a few years to pay less, how to get money later as follows: social insurance need to pay 15 years of years (continuous) monthly basic pension by the basic pension and personal account pension: basic pension = basic pension + personal account pension 1. the calculation of the basic pension is no longer a simple retirement of 20% of the previous year's social wage, but the basic pension is no longer a simple retirement of 20% of the previous year's social wage, but the basic pension is no longer a simple retirement of 20% of the previous year's social wage, but the basic pension is not the same as the basic pension. "Based on the average of the average monthly salary of local on-the-job workers in the previous year and the average of the indexed monthly contribution salary of the person himself, and 1% for every year of contribution." The specific formula is: basic pension = (the average monthly salary of local on-the-job workers in the previous year when the participant retires + the average indexed monthly contribution salary of the participant) ÷ 2 × the number of years of contribution × 1%