Di Lei Zha Ying (地雷炸營)

Components of Di Le Zha Ying (top), assembled land mine (middle) and concealed land mine (bottom), from 'Wu Bei Zhi (《武備志》)'.

Di Lei Zha Ying (地雷炸營, lit. 'Ground thunder exploding camp') was a type of Chinese land mine designed for anti-personnel use. Developed during late Ming period, Di Lei Zha Ying was unique among Ming land mines in that it was not a blast mine but a fragmentation mine.

Di Lei Zha Ying was assembled from three major components: A thin round wooden plank serving as cover; a thick round wooden plank serving as base, and eight oil-treated bamboo tubes. Each of these tubes was filled with gunpowder and numerous lead and iron pellets, then sealed with wax. The land mine was then connected to a fuse linked to Gang Lun Fa Huo (鋼輪發火), and could be set to passively triggered (using tripwire, pressure plate or similar devices) or manually activated. Once triggered, Di Lei Zha Ying shot the pellets upwards over a large area.