Excuse me: can the social security paid by individuals and units be merged?

Hello, dear. The flexible employment social security paid by individuals and the social security paid by units can be merged, but not at the same time. For example, social security paid by individuals in 2020 and social security paid by companies in 20021year can be merged. However, if they all pay social security on 202 1, they cannot be merged. As long as the social security relationship is transferred, the social security paid by the individual (flexible employment social security) is transferred to the social security paid by the unit, or the social security paid by the unit is transferred to the social security paid by the individual, the cumulative calculation of the payment period and the merger of personal account funds can be realized. Individuals who purchase endowment insurance for urban and rural residents can only incorporate employee social security into urban and rural endowment insurance. The operation method is to merge the payment period and personal account funds by transferring the social security relationship. However, when both employees' pension insurance and residents' pension insurance are involved, the transfer and connection procedures can only be handled after the retirement location is determined.