The formation was located on Yufu Shore (魚腹浦) by the Yangtze River near present-day Baidicheng, Chongqing, China, where supposed ruins of the array exist.
In folklore, when the Yangtze River rises in summer, the formation is submerged, but in autumn, the array resurfaces, with the rocks and boulders still left intact in their original positions.
When Lu Xun arrived at Yufu Shore by the Yangtze River near Baidicheng, he felt a strong enemy presence and cautioned his troops of a possible ambush.
Bewildered, Lu Xun asked a local, who told him that qi started emerging from the area after Zhuge Liang arranged the rocks there when he first entered Sichuan.
Dust storms overshadowed the sky and the rocks seemed like swords, mountainous piles of dirt emerged while the river waves sounded like an attacking army.
[1] During the late Ming Dynasty, the rebel leader Zhang Xianzhong stumbled across the maze while he was fleeing from the imperial army in Chengdu.