There should be many reasons. But I think one of the reasons is that in order to solve the trade deficit between China and the United States, the US government has been putting pressure on the RMB, hoping that the RMB will appreciate. Generally speaking, China has a lot of dollars because of its strong foreign exchange reserves. When the RMB appreciates, if we hold the net assets of foreign currencies, we will lose money (because the same amount of foreign currencies cannot be exchanged for as many domestic currencies as before). In order to reduce losses, China will buy a lot of American products, so that the employment pressure in the United States will be reduced and the people's happiness index will be improved. . This is also one of the reasons why the United States has been hoping that the RMB will appreciate.
The teacher happened to talk about this problem in class yesterday. . Ah ha ha