Question about currency

Generally in the big shopping mall and hotel, it is acceptable to credit card payment, but there will do not accept credit card in small vendors and some remote places in China, so we kindly suggest you exchange a small amount of Chinese Yuan in your country before leaving. There is a money exchange service at the airport, but the exchange rate may not be favorable. Usually, four-star and five-star hotels offer exchange service, but only for their guests. Mostly people will go to banks to exchange money.