1, foreign exchange: buying and selling foreign exchange makes a difference. People who buy foreign exchange generally attract customers with preferential conditions such as higher than the national quotation or no upper limit (the state has restrictions on buying and selling foreign exchange). \x0d\ 2。 Foreign exchange is the creditor's rights held by the monetary management authorities (central bank, monetary management institutions, foreign exchange stabilization fund and Ministry of Finance) in the form of bank deposits, treasury bonds and long-term and short-term government securities. Can be used when the balance of payments is in deficit. \x0d\ includes foreign currency, foreign currency deposits, foreign currency securities (government bonds, government bonds, corporate bonds, stocks, etc. ) and foreign currency payment vouchers (bills, bank deposit vouchers, postal savings vouchers, etc.). ).\x0d\