(Gansu) When to buy old-age insurance after demolition?

Due to the loss of land acquisition projects in previous years, social security funds have not been implemented in Sijiqing Village. When the project lands and the social security funds are in place, the District Social Security Bureau can handle the endowment insurance for landless farmers in your village. Another regulation is that the standard of endowment insurance for landless farmers is calculated according to the social wage of the whole province in the year of land acquisition, not according to the social wage of the whole province in which the funds are in place for the fixed number of years, so there is no problem of "price difference".