According to the official website Display Package of Detian Waterfall, if tickets are included, the tickets are valid for 30 days from the same day.
Detian Waterfall is located in Detian Village, Shuolong Town, daxin county, Chongzuo City, Guangxi Zhuang Autonomous Region, in the upper reaches of Guichunjiang River on the Sino-Vietnamese border. The waterfall is magnificent and connected with the adjacent Vietnam Half Moon Waterfall.