Foreign exchange as mentioned in the Regulations of People's Republic of China (PRC) on Foreign Exchange Control refers to the following means of payment and assets expressed in foreign currencies that can be used for international settlement: (1) foreign currency cash, including banknotes and coins; (2) Foreign currency payment vouchers or payment instruments, including bills, bank deposit vouchers, bank cards, etc. ; (3) Foreign currency securities, including bonds and stocks; (4) Special drawing rights; (5) Other foreign exchange assets.