Is social security cumulative 15 or continuous 15?

According to "People's Republic of China (PRC) Social Insurance Law", individuals who participate in the basic old-age insurance can receive the basic old-age pension on a monthly basis when they have paid a total of 15 years at the statutory retirement age.

Social insurance refers to the principle that the state raises funds through various channels through legislation according to the correspondence between rights and obligations, and provides material help to the insured when he faces risks such as old age, illness, work injury, unemployment and maternity.