When imported products are settled in foreign exchange, the purchasing power of RMB will increase. After the globalization of trade and the localization of trade currency. It can also be settled in RMB. So tens of millions of foreign exchange reserves are enough.
Foreign exchange reserves cannot resist inflation. It is better to exchange foreign exchange for mineral technology to buy back RMB.
Foreign exchange reserves are equivalent to the IOUs that foreign countries import products from China to buy enterprise mines. There is no practical significance in holding this IOU for a long time.