Could you please give some details of China Currency and the payment in China?

China's currency is the Renminbi (RMB), usually called the Yuan. Ten Jiao make up one Yuan. At present, the Yuan is worth about US $0.12, with slight daily fluctuations. The Bank of China has exchange desks for foreign currency and travelers checks with convenient hours at all hotels, airports, Friendship Stores, and other shopping areas.

Visa, Master Card, American Express, Diner's Club, Federal Card, Million Card, and JCB credit cards are accepted at most hotels and state run shops in the major cities. Travelers should be prepared to pay in Yuan when shopping in smaller shops, at restaurants,
and in smaller hotels.