The official currency of the People’s Republic of China is the renminbi, often abbreviated as RMB. The base unit of this currency is the yuan, international currency code CNY. The Bank of China issues RMB bills in denominations of ¥1, ¥2, ¥5, ¥10, ¥20, ¥50 and ¥100. Coins come in denominations of ¥1, 5jiao, 1jiao and 5fen, 2fen, 1fen. The RMB is not legal tender in the Special Administrative Regions of Hong Kong and Macau, both of which issue their own currencies HK$ and MOP$.
As a general rule, tipping is not practised anywhere in China, including Hong Kong and Macau. Tipping used to be refused in restaurants, but nowadays many midrange and top-end eateries include their own service charge, cheap restaurants do not expect a tip. Taxi drivers throughout China do not ask for or expect tips.
There is no tourist tax-refund system in operation and the prices already have VAT and any sales tax included.