The Heishui River is located in Daxin County of Chongzuo City, visible en route from Tongling Grand Canyon to Detian Waterfall. The water in the Heishui River isn't black, but rather clear green river water that appears dark green with the reflection of mountain peaks along the banks, and is therefore called a black-water river. Boat cruises are preferred by most tourists. Along the way you can see the mountain chain covered in dense vegetation, which is reflected in the crystal green river. It reveals the raw beauty of nature but also inspires feelings of comfort and satisfaction.