Ban Gioc Fall is situated in Trung Khanh district in Cao Bang province nears the Sino-Vietnamese border. The echo of the falls can be heard kilometers away from Trung Khanh. - تنزيل في 4shared. Ban Gioc Fall is situated in Trung Khanh district in Cao Bang province nears the Sino-Vietnamese border. The echo of the falls can be heard kilometers away from Trung Khanh. تم استضافتها في خدمة تبادل الملفات في 4shared.