The No. 53 boundary monument of China-Vietnam is located next to the Great New Detian Waterfall in Chongzuo, Guangxi, China. It was erected in 1896 AD for the Qing Dynasty. When you visit the Detian Waterfall, you have to go up, less than one kilometer away. There is also a small Zhongyue Street where you can buy some Vietnamese specialties. Unfortunately, when I went, the street was closed,