10.2 km. Tongliang District is located in the upper reaches of the Yangtze River, western Chongqing, Chongqing metropolitan area and the new urban development zone. According to the map, Tongliang City is 0.2km away from Tianxuan Lake10. Xuantianhu Reservoir, located in Tongliang District, Chongqing, is a medium-sized reservoir integrating agricultural irrigation, urban water supply, flood control and environmental ecological protection, and is one of the "Zeyu Projects" in Chongqing.