《六韬·虎韬·军用》
在隘路、小道和低洼的地形上，可以张设名为铁械锁参连的障碍物，共一百二十具。
 狭路微径，地陷，铁械锁参连，百二十具。
On narrow roads, small paths, and low-lying terrain, obstacles known as Interlocking Iron Shackles can be set up. One hundred and twenty pieces are required.