Currency devaluation. The sharp drop in the exchange rate in a short period of time represents the coming of the economic crisis. Investors thought that the country's economy was bearish and the currency had no investment value, and then sold it in large quantities, which led to a sharp depreciation of the currency. Of course, many hedge funds make money by shorting currencies. The Asian financial crisis launched by Soros at that time was to make money by selling currencies of various countries in the futures market, which made many people jump off buildings. If you don't have a large amount of dollar reserves to buy back your own currency, foreign speculators will destroy your economy, which is one of the reasons why countries have to reserve a large amount of dollars after the Asian economic crisis.

But if it is not a sharp drop in a short period of time, don't worry, it is also conducive to exports. In short, the exchange rate of any country should remain stable, and ups and downs are not good.