may not. The endowment insurance is the same as the personal ID card. One person can only submit one copy. At present, China's social insurance has not yet reached the national network, so one person may open an account in two different cities to pay medical and social insurance at the same time. However, the policy of social medical insurance is that everyone can only enjoy one medical insurance treatment, that is, cannot enjoy two reimbursement at the same time, so it is useless to buy two and only one reimbursement and buy more. So even if two different cities pay medical insurance and social insurance at the same time for some reasons, you can't enjoy two pension insurance when you reach retirement age. So if two insurance policies are paid in two cities at the same time, they may be merged (unlikely), or one of them will be returned to you. Note: One of them can only be returned at retirement or other times when the insurance is eligible for return. Therefore, if two different cities pay insurance at the same time, you need to stop paying one insurance. Then let's extend this question: 1. The method of collecting social insurance premiums. The proportional insurance premium system is based on the salary income of the insured and stipulates a certain percentage, so as to calculate and collect insurance premiums. With the proportional system, the main purpose of the original social insurance is to compensate the income lost by the insured during the risk accident, so as to maintain the minimum living standard. Therefore, it must be based on the income that the insured usually depends on, on the one hand, as the standard for measuring benefits, and on the other hand, as the basis for calculating premiums. The biggest defect of the proportional insurance premium system based on work is that the burden of social insurance is directly related to wages. Whether employers and employees bear social insurance premiums or one of them bears social insurance premiums, the burden of social insurance is reflected in the increase of labor costs, which will result in capital crowding out labor, thus causing increased unemployment. 2. The equal premium system means that no matter how much the income of the insured or his employer is, the same amount of premium will be charged. This system has the advantages of simple calculation and easy implementation; In addition, countries that collect insurance premiums in this way also generally adopt an equal system when paying, which has the meaning of equal income and expenditure. But its defect is that the low-income people pay the same premium as the high-income people, which is obviously unfair in terms of affordability.