Authorities pointed out that China's sustained surplus in international payments is the main reason for the sharp increase in foreign exchange reserves, and its basic support is the result of the rising economic competitiveness of China.

The so-called foreign exchange reserves refer to foreign convertible currencies held by a country's monetary authorities that can be used for external payments. Not all national currencies can be used as international reserve assets. Only those currencies that occupy an important position in the international monetary system and can be freely converted into other reserve assets can be used as international reserve assets. China and other countries in the world often use foreign exchange reserves in foreign trade and international settlement, mainly including US dollars, euros, Japanese yen, British pounds and so on.