Foreign exchange: Foreign currency remitted to domestic account from outside China (that is, someone from abroad remitted to your China account) is called foreign exchange. General enterprises hold foreign currency of this nature. When such funds are converted into RMB, the "spot exchange rate" (or "exchange rate" or "settlement exchange rate") is adopted.

Foreign currency: this part of foreign currency held by Chinese residents or non-residents or deposited in domestic banks (that is, whether your money is held or deposited in banks, its nature is the same). The "cash purchase price" (or "bill purchase price") is used to convert such funds into RMB.

Purchase of foreign exchange: converting RMB into foreign currency is called purchase of foreign exchange. Use "selling price" (also referred to as "selling price", "selling exchange rate" and "buying exchange rate")

Benchmark price: Oh, this is a matter for the central bank. If President Zhou Xiaochuan wants to be in charge, stay out of it:-).

Middle price: the quotation is the same as the benchmark price, which is used by commercial banks to determine the buying and selling price. So you don't have to worry. It's none of your business.

So, if you want to change RMB into dollars, you can only use "selling price".

This is the real-time foreign exchange rate of China Bank://cn /cn/common/whpj.html