It also depends on the situation. Normally, this is the case, but sometimes it is not. For example, related countries that are pushing RMB to become the main currency of China do not need to exchange RMB, so they can trade directly in RMB! Now China's foreign exchange policy has changed. Now it is not a single pegged foreign exchange policy, but a flexible floating foreign exchange policy! There are more countries linked, so we should pay special attention to the exchange rate changes in international trade, but then again, this will allow enterprises to obtain more foreign exchange hedging to reduce the chance of exchange rate loss!