Detian Transnational Waterfall is located in the upper reaches of the Guichun River in Daxin County, Chongzuo City, about 50 meters away from the border pillar of China-Vietnam border. The clear Guichun River is a tributary of the Zuojiang River and the border river of the Sino-Vietnamese border. The Detian Waterfall is a masterpiece when it flows through Putang Island. The mighty returning spring water flows from the north, and the high cliffs of the three-storey Putang Island are screaming and swaying. The river rises down from the cliffs of more than 50 meters and hits the rock. Splashes of water, misty fog, distant looks like squatting, close-up view like flying beads splashing jade, through the refraction of the sun, colorful, the sound of the water, the river valley, the momentum is very strong. The waterfall falls at three levels, with a maximum width of more than 200 meters, a depth of more than 60 meters, a drop of more than 70 meters, and an average annual flow of 50 cubic meters per second. The geology of the site is thick layered dolomite. It is the largest natural waterfall in Southeast Asia and has been designated as a special attraction by the country. It is connected to the Banjo Falls in Vietnam, like a pair of close sisters.