The central parity rate of the US dollar exchange rate = (US dollar spot exchange buying price + US dollar selling price) / 2, which is an important indicator to measure the value of a country’s currency.
The People’s Bank of China announces the closing price of USD and other trading currencies against RMB in the inter- bank foreign exchange market on that day after the market closes on each working day, as the central parity for the trading of the currency against RMB on the next working day. It is the most important reference indicator for the spot interbank foreign exchange market and the exchange rate quoted by banks.