guangzhou, in english and other european languages also known as canton(which was first romanized from the cantonese pronunciation of guangdong by the portuguese) and also known as kwangchow, is one of the five national central cities and a sub-provincial city located in southern china in the middle of guangdong province north of the pearl river, about 120 km (75 mi) northwest of hong kong.
it is the third largest city in china and the capital of guangdong province, southern china's largest city and key transportation hub and trading port, located on the pearl river which is navigable to the south china sea.as of the 2000 census, the city has a population of 6 million, and an urban area population of roughly 11.85 million, making it the most populous city in the province and the third most populous metropolitan area in china. the guangzhou government's official estimate of the city's population at the end of 2009 was 10,334,500, an