Is the amount declared by Suzhou social security payment base filled in for one year?

The social security base shall be the average monthly salary of employees in the previous year. From July of the previous year 1 to June 30th of that year, the social security base shall remain unchanged in principle. The social security base of the previous year should be the average monthly salary of employees in the previous year. No matter which year the social security base is, employees should not fill it in by themselves, but the personnel of the unit are responsible for statistics and reporting, and the specific operation is carried out online.