Because the relationship between the two is the price, in other words, the depreciation of the dollar means that you used to exchange 1 dollar for 8.27 yuan. Now it can only be exchanged for 6.5997 RMB, which means that RMB is valuable. The dollar is the world currency, that is, everything is settled in dollars. The United States and oil exporting countries agree that the dollar will depreciate. In order to ensure that the price of crude oil does not decrease, both gold and international commodity prices will rise, which will affect the rise of commodity prices all over the world. When the dollar depreciates, everyone's dollar is gone. In order to preserve the value and gain profits, it will flood into China. China will issue the same RMB exchange, and the currency will be loose. If there is no increase in commodities, inflation will occur. Moreover, after the money enters China, it will enter industries where people need to make money by speculation, such as real estate speculation and grain futures. Speculation on some storable agricultural products will lead to inflation. Now inflation is not only in China, but also in the emerging economies of the world. Some countries, such as India and Brazil, are more serious than China. India's inflation is higher than 8%, and Brazil's inflation is also 6.5%.