Don't worry, there are many ways to find out:
(1) Inquire about the payment from the personnel department of the company.
(2) Bring my ID card to Cangzhou Social Security Branch for inquiry.
(3) You can also call the social security service number 12333.
For your reference.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.