Can flexible employment social security be filed?

Hello, dear, flexible employment can change gears in the middle of buying social security, and it can be changed from high to low next time. If you are a flexible employee, the level of social security can be upgraded or downgraded, because1~ June is the time when the base of old-age insurance rises. In July, according to the rising technology of endowment insurance, the grade of endowment insurance can be raised or lowered, because one-person endowment insurance can only be lowered once a year. If the economic conditions are good, you can raise the grade a little, because the higher the grade, the higher the pension after retirement. Some people raise their grades too high, but they feel that their economic ability is limited. Then, after the pension insurance goes up, they can lower the level of pension insurance by one level, which is also possible. The above is my answer, I hope I can help you and wish you a happy life.