Hong Kong ( 香港 ), is one of the two Special Administrative Region of the People's Republic of China, the other being Macau. It is situated on China's south coast and, enclosed by the Pearl River Delta and South China Sea, it is known for its expansive skyline and deep natural harbour. With a land mass of 1,104 km2 (426 sq mi) and a population of seven million people, Hong Kong is one of the most densely populated areas in the world. Hong Kong's population is 93.6% ethnic Chinese and 6.4% from other groups. Hong Kong's Cantonese-speaking majority originate mainly from the neighbouring Canton (now Guangdong) province, from which many of them fled to escape wars and Communist rule in China from the 1930s to the 1960. Hong Kong is a world city. As Hong Kong ranks the third most important leading international financial centre, after London and New York City, Hong Kong has a major capitalist service economy characterised by low taxation and free trade, and the currency, Hong Kong dollar, is the eighth most traded currency in the world.