This is mainly because in the past, most international trade was settled in US dollars. Because the dollar is an international currency, and the United States is also the most powerful country in the world. So it was normal to settle accounts in dollars in the past. However, with the development of China's economy and the increasing national strength, China's currency also plays a very important role in world trade. Because China needs to import a lot of energy resources, it will be more convenient and quick to settle accounts in RMB.
Of course, it is mainly because the national strength of the United States is slowly declining, and the dollar economy has not become so stable. So people all over the world are slowly looking for a currency that can be used internationally to replace the dollar. China is the most powerful importer and exporter in the world because of its strong national strength. Therefore, China will conduct a lot of economic and trade exchanges with foreign countries. Therefore, the internationalization of RMB is very important at this time.
Of course, because Russia is sanctioned by western countries, it will not choose to use American currency as foreign exchange reserves. So he chose the stronger and more promising RMB as the reserve currency. Of course, there will be a lot of energy trade between China and Russia. Russia also needs to import goods and industrial products from China. So the two countries will choose to settle directly in their respective currencies.