Let me explain it to you this way. For example, if all valuable things in China are compared to 100 kilograms of potatoes, worth 100 yuan, then the price of potatoes is one yuan per kilogram. So, if you print another 100 yuan, what is the price of this potato? Two yuan a pound is enough, right? However, your actual things have not increased, only the currency has increased, not the material. So if the 100 yuan is brought over by a foreigner and is in foreign currency, then this is different. You can use this foreign currency to buy things abroad and get back 100 yuan of potatoes. If you say, wouldn’t it be enough if I print more money myself and buy potatoes abroad? Then you are wrong. First of all, it doesn’t matter how much money you print. As long as you dare to say that our exchange rate will not change, then others will dare to accept your money. Then they can use your money to buy things in your country. For example, if you use all the 100 dollars you print out to buy things from abroad, you may be able to buy only 50 kilograms of potatoes. However, if you use the 100 dollars to buy them in China, you can buy the entire country. Bought it.

Does this make it clear?