The town of Chang'an is located in the Pearl River Estuary, the southern extreme of Dongguan City. It borders on the Songgang Town of Bao'an District of Shenzhen City at Fenglundi to the east; the town of Humen at Daningcong of Shangjiao to the west; Dongbao River near the sea of Lingdingyang at the Pearl River Estuary to the south and the town of Dalingshan at Lianhuashan Mountain to the north. Thus the town of Chang'an, as a saying goes, sits on the lotus throne with a dragon and a tiger on both sides, situated in a plain near the mountain and by the river. The town is 15 kilometers across from east to west and seven kilometers from the north to south with an area of 83 square kilometers.
 
    The town of Chang'an, with Guangshen Expressway, 107 State Road and C358 Provincial Road cutting through it, is the south gate of communications among Guangzhou, Dongguan and Shenzhen. It covers an area of 83 square kilometers and within which there are thirteen village committees with 35,000 permanent residents, 600,000 drifting people and more than 30,000 overseas Chinese.