Hong Kong Special Administrative Region of the People's Republic of China, is a city on the southern coast of China at the Pearl River Estuary and the South China Sea.[9] Hong Kong is well known for its expansive skyline, deep natural harbour and extreme population density (some seven million inhabitants over a land mass of 1,104 km2 (426 sq mi)).[10] The current population of Hong Kong comprises 93.6% ethnic Chinese.[5] A major part of Hong Kong's Cantonese-speaking majority originated from the neighbouring Canton province (now Guangdong),[11] from where skilled labour fled after the communist government took over China in 1949 and subsequently purged its population during the 1960s.[12][13][14][15]