Ban Gioc - Detian Falls (Chinese: ???? & ???? - Vietnamese: Th醕 B?n Gi?c & Th醕 ?c Thi阯) are 2 waterfalls on the Qu鈟 Son River or Guichun River straddling the Sino-Vietnamese border; located in the Karst hills of Daxin County in the Chongzuo prefecture-level city of Guangxi Province; on the Chinese side; and in the district of Trung Khanh District; Cao B?ng province on the Vietnamese side; 272 km north of Hanoi.

Guangxi; formerly romanized Kwangsi; is a province of southern China along its border with Vietnam. In 1958; it became the Guangxi Zhuang Autonomous Region of the People's Republic of China; a region with special privileges created specifically for the Zhuang people.