Pinggangling Underground Great Wall, Pingxiang City

Pinggangling Underground Great Wall Scenic Spot is located 23 kilometres north of Pingxiang City. 1889, Su Yuanchun, the governor of Guangxi at the end of the Qing Dynasty, based on the topography of the Ping and River, which is the boundary river between China and Vietnam, built two fortresses on Pinggangling, one with a German Krupp cannon and the other with several small cannons. The two fortresses were respectively installed with one German Krupp cannon and several small cannons. The North Battery was moved to the ‘Zhenning Battery’ in the People's Park of Nanning City by the Guangxi warlord Lu Rongting in 1921. The two batteries were connected by underground barracks and passages, with two exits every 10 metres to the outside world. Underground there are garrison rooms, ammunition stores, and command rooms. In the centre, there is an underground passage leading directly to the Binh Hoa River, the border river between China and Vietnam. The entire underground barracks and passages cover an area of tens of acres, criss-crossing and cleverly structured, like an underground labyrinth, where the Battle of Binh Hoa Pass, the last battle of the Liberation War to liberate the southern border of Guangxi, took place in February 1950, and the Battle of Binh Hoa Pass, the last battle of the Liberation War to liberate Guangxi, took place here.