Forward exchange rate, also known as forward exchange rate, refers to the exchange rate used when both parties reach a foreign exchange transaction agreement and agree to actually deliver foreign exchange at a certain time in the future.
The spot foreign exchange buying price is the price you sell to the bank, that is, the bank buys foreign exchange from you in RMB.
The cash selling price means the opposite, that is, the bank gives you foreign exchange and you give the bank RMB.
The median price is the average of the buying price and selling price. For reference only.
If you really can't do it, just imagine that banks always make money, you always lose money, banks always get more, and you always get less.