After receiving the citizen card (social security card), the insured newly participating in the basic medical insurance shall notify the cardholder to go through the insurance formalities with the citizen card (social security card) in the relevant social security agencies, and go through the medical insurance information writing procedures in the center hall, business hall or service point of the citizen card.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.