Also known as the Two Artillery Emplacements on Youfu Hill, the site sits on Youfu Hill to the right of Friendship Pass (ticket required), which was formerly called Zhennan Pass.

The emplacements were constructed between 1887 and 1892 by Su Yuanchun, a Qing Dynasty border defense military commander. Comprising three forts named Zhennan, Zhenzhong and Zhenbei, they were built with bricks and stones and feature vaulted tunnels inside. The structures are divided into three stories, with front and rear halls, storage rooms and passageways. Seven German Krupp cannons were mounted here.

The two major emplacements formed a mutually supportive defensive position. Standing at an altitude of 590 meters, the hill is surrounded by steep cliffs. Overlooking the surrounding terrain, the forts boast an imposing strategic location. A stone tablet recording the construction of the forts stands at Zhenzhong Fort.

In December 1907, Sun Yat-sen dispatched Huang Mingtang and Guan Renfu to Zhennan Pass to plan an uprising. They enlisted soldiers of the Qing army as insiders and successfully seized the two artillery emplacements on Youfu Hill. Sun Yat-sen and Huang Xing traveled all the way from Hanoi, Vietnam, to direct the battle on site.

Lu Rongting led over 4,000 Qing troops to launch a counterattack. The insurgents defended the forts fiercely for seven days and nights, killing and wounding more than 200 enemy soldiers. Eventually, outnumbered and running out of ammunition and provisions, the uprising troops were forced to retreat.

Youfu Hill, Jiangzhou District, Chongzuo City, Guangxi Zhuang Autonomous Region