What currency do Chinese use?Is my credit card accepted?

In China, people use RMB. Other currencies is not circulating in the market. When on a tour, paying things in cash is the common practice in shopping. Speaking of credit cards, the Bank of China nowadays accepts Master, American Express, Dynasty, Visa, JCB, and Diners Club cards, you may use these cards to withdraw cash over at exchange counter or ATM. But you can make purchases or pay bills at large department stores, restaurants and hotels in more than 100 major cities of China.