There is no necessary connection between the place where workers receive basic pension after retirement and the place where they register. The basic pension is paid by the basic endowment insurance fund. Retire where you are insured and receive a basic pension. The laborer's household registration is in Nanjing, and now he works in other places. If you are re-employed in Nanjing after the termination of labor relations, you can transfer the old-age insurance relationship to Nanjing, go through retirement procedures in Nanjing, and receive a basic pension. But those who are encouraged in other places cannot be transferred back to Nanjing.

Ministry of Human Resources and Social Security, Ministry of Finance

Interim Measures for the Transfer and Continuation of Basic Old-age Insurance for Employees of Urban Enterprises

Guo Ban Fa [2009] No.66

Article 2 These Measures shall apply to all persons who participate in the basic old-age insurance for employees of urban enterprises, including migrant workers. Those who have received basic old-age insurance benefits according to state regulations will no longer transfer the basic old-age insurance relationship.

Article 5 The transfer of the basic old-age insurance relationship of the insured with inter-provincial floating employment shall be handled in accordance with the following provisions:

(1) If the insured person returns to his domicile (referring to a province, autonomous region or municipality directly under the Central Government, the same below) for employment, the relevant social security agency at the domicile shall handle the transfer and connection procedures in time.