Wubei Zhi (Vol. 55)

The body is one foot and five inches long. It is cast from copper or forged from iron, with a hollow center to store one lead pellet qian dan lead ball projectile. The blade has two edges, three inches in length, and is coated with tiger medicine hu yao a toxic paste used on weapons. Both sides are also bound with poisonous fire du huo a flammable, toxic incendiary mixture. When facing the enemy in battle, the tactics used are the same as those for the Poison Dragon Spear du long qiang a specialized incendiary polearm. Strike at the enemy’s head from above, and hook their horse’s legs from below. A single blade of this type is sufficient to match three strong soldiers. It is one implement with three uses, to be applied according to the distance of the enemy ranks in order to counter them.