One: exchange rate parity is to determine the parity between two different currencies. First of all, it is necessary to determine which country's currency shall prevail. Due to different standards, several different exchange rate pricing methods have emerged.
2. Foreign exchange quotation, that is, the foreign exchange listing price of designated foreign exchange banks, is the buying and selling price between various foreign currencies and RMB set by banks (referring to the same foreign exchange quotation of the head office and branches) according to the middle price of RMB market published by the People's Bank of China and the international foreign exchange market. This foreign exchange quotation changes in real time, even on the same day.