Guangzhou , also known as Canton is the capital and most populous city of the province of Guangdong in southern China. On the Pearl River about 120 km north-northwest of Hong Kong and 145 km north of Macau, Guangzhou has a history of over 2,200 years and was a major terminus of the maritime Silk Road, and continues to serve as a major port and transportation hub, as well as one of China’s three largest cities. (Wikipedia).