Introduction to the Pingggongling Underground Great Wall: It is located 25 kilometers north of Pingxiang City, where ancient trees are towering, birds are singing and flowers are fragrant. The famous Underground Great Wall is located here.
In the fifteenth year of the reign of Emperor Guangxu of the Qing Dynasty (1889), Su Yuanchun, the governor of Guangxi, built two forts in the north and south on Pinggang Ridge based on the terrain of the Pinghe River on the Sino-Vietnamese border. Each of the two forts is equipped with a German Krupp cannon and several small guns. The Beitai cannon was moved to the "Zhenning Fort" in the People's Park of Nanning City in 1921 by Guangxi warlord Lu Rongting. The two forts are connected by underground forts and passages. The underground passages have two exits every 10 meters connected to the outside world. There are garrison rooms, ammunition depots, command rooms, etc. underground. There is an underground passage in the middle that leads directly to the Ping'er River, the border river between China and Vietnam, with a total length of more than 1,000 meters, so it is called the "Underground Great Wall". The entire underground barracks and passages cover an area of dozens of acres, crisscrossed with ingenious structures, like an underground maze. The Pinggangling Fort left a glorious page in the War of Resistance Against France, the War of Liberation, and the aid to Vietnam and the war against the United States.