One. The so-called cash purchase. That is, when RMB is converted into euros in the bank and the euros stored in your local and foreign currency accounts are converted into RMB again. The price is settled by the bank with you. The so-called bank cash purchase price.

Two. The so-called cash purchase. That is, when you have euro cash on you and go to the bank to change it into RMB. The price is settled by the bank with you. The so-called buying price of bank notes.

The bank selling price of cash is the same.

Simple understanding. That is, you change RMB into euros. This is the spot purchase price. You change euro cash into RMB. This is the cash purchase price.

Bank buying rate of cash. It is lower than the price at which the bank sells cash. It is precisely from this that banks earn profits from operating foreign exchange.