Gangyan Town is a town under the jurisdiction of Chongming County, Shanghai, located in the central east of Chongming County, east of Xianghua Town, south of Fortress Town, west of竖新镇, north of the Shanghai Police Reserve District, Fumin foodstuffs base, 30 kilometers from Chongming County, with a total area of 75 square kilometers. As of 2009, Hongkong town has 21 administrative villages and 1 community, with a total population of 53,400, mainly Han Chinese, with Hui, Manchu, Zhuang, Mongolian and Bai minorities, etc. In 2014, Hongkong town realized an added value of gross domestic product (GDP) of 912 million yuan, an increase of 7.08% from 2013.