Is it okay to pay only endowment insurance?

Social security can only pay endowment insurance, but generally only flexible employment social security and urban and rural social security can pay endowment insurance:

Social security for flexible employees: Flexible employees can pay by themselves, but generally they can only pay basic old-age insurance and basic medical insurance (maternity insurance has been merged with medical insurance), but they cannot pay unemployment insurance and work-related injury insurance by themselves. Flexible employees can choose to pay only basic old-age insurance or basic medical insurance when paying social security. Of course, they can also choose to pay both pension insurance and medical insurance.

Social security for urban and rural residents: generally, it includes endowment insurance for urban and rural residents and medical insurance for urban and rural residents, and the insured can choose to pay only one or both of them;

Employee social security: that is, the social security purchased by the employer for employees. Generally speaking, not only the old-age insurance, but also the old-age insurance, medical insurance (maternity insurance has been merged with medical insurance), industrial injury insurance and unemployment insurance should be paid together.