1. is different, because the central bank will only announce a benchmark price, that is, the middle price, and banks have autonomy in the specific buying and selling price, so different banks have different prices.

2. branches in the same city will not, but in different cities, it is possible. This price is not fixed, and banks have certain autonomy.

3. The exchange rate for watching news is the benchmark price or middle price announced by the central bank, which is determined by the central bank according to the situation in the sky and the exchange rate transactions of other foreign currencies in the foreign exchange market.