Buying price of cash: customers sell foreign currency cash in their accounts to banks in exchange for domestic cash. It is equivalent that the bank is the buyer and the customer is the seller. For example, if you need to exchange RMB of 100 USD, the bank needs to pay 634.59 RMB to the customer at the spot exchange rate of 1: 6.3459.

Buying price of cash: customers sell foreign currency cash to banks in exchange for domestic cash. It is equivalent that the bank is the buyer and the customer is the seller. For example, if you need to exchange RMB of 100 USD, the bank needs to pay the customer RMB 629.50 at the cash exchange price of 1: 6.2950.

Selling price: The foreign currency of the bank is sold in cash, so there is only one selling price, and the customer can convert it into cash after paying the exchange fee.

Middle price: also known as benchmark price, refers to the average price of buying price and selling price of one country's currency against another country's currency. The daily quotation shall be formulated by the People's Bank of China, and the designated foreign exchange places shall be authorized to publish the daily quotation of foreign exchange.

Cash: Cash refers to real money and silver.

Cash: Cash refers to the money transferred to your account by telegraphic transfer or money order. Through foreign banks, this is simply a virtual book number.