The part paid by the medical insurance unit is included in the overall fund account, which is a big pool of medical insurance funds. This overall fund account does not belong to individuals, but belongs to the same account of all insured persons. When someone falls ill and meets the reimbursement criteria, the reimbursement expenses can be paid from this overall fund account. Specifically, the medical insurance premiums paid by the unit will be transferred to individual medical accounts according to different age groups and retirement conditions. However, these personal medical accounts belong to individuals and can be used in daily pharmacies to buy medicines, clinics and so on. The part paid by the unit will all enter the overall fund account to pay the medical expenses of the insured.