Why doesn't China liberalize foreign exchange control and stipulate that all enterprises' foreign trade income must be replaced in banks? ...

Is to avoid the random circulation of foreign currency in the domestic market.

If there is no control, if you take dollars to the store to buy things, will the salesperson sell them? Do you want to take Japanese yen and sell it to the shop assistant? If you want to bring euros, rubles, pesos and Vietnamese dong, should the salesman recite the exchange rate table of the day?

If it is not standardized, it is a factor that makes the transaction difficult. What is more troublesome is that if the dollar depreciates, ordinary people who take the dollar will bear the loss of the depreciation of the dollar. With foreign exchange control, the state takes the risk for you. In this way, the whole country is managed by an economist's office, called the foreign exchange management office. Compared with you personally, you know nothing, don't read statements, have never studied economic management, and are less likely to lose money. If we ordinary people go crazy when we see the price of gold rise, we will not adopt this simple operation level when the price of gold falls, and we will lose money when we distribute it to ordinary people. Unified deployment by knowledgeable people can reduce losses.