Narrow foreign exchange is a means of payment for international settlement expressed in foreign currency. Generalized foreign exchange is an asset expressed in foreign currency. Foreign exchange in a broad sense and foreign exchange in a narrow sense are expressed in foreign currencies, and RMB certainly does not belong to foreign exchange.

If abroad, the RMB is of course foreign exchange, but it is only foreign exchange in a broad sense, not in a narrow sense, because the RMB is not a freely convertible currency, nor is it a currency that can be freely imported and exported.