‘外汇’ (wài huì) literally means ‘external currency’ — ‘外’ (wài) means ‘outside’ or ‘foreign’, and ‘汇’ (huì) means ‘to gather’, ‘to exchange’, or ‘remittance’. Together, they refer to foreign currencies held by a country’s central bank or used in international trade and finance — for example, U.S. dollars, euros, or Japanese yen when held or transacted in China. It is a formal, technical term commonly used in economics, banking, and government policy contexts.

In daily life, ‘外汇’ appears in discussions about exchange rates, foreign investment, travel money, and cross-border payments. While ordinary people rarely use the term in casual speech, it frequently appears in news reports, financial apps, and official announcements. It is distinct from everyday terms like ‘外币’ (wài bì, ‘foreign currency’) — ‘外汇’ emphasizes the functional, systemic role of foreign money in national reserves and international transactions, not just physical bills or coins.