Wubei Zhi (Vol. 55)

Military Records Treatise, Volume 128, Records of Military Materiel, Fire, Illustrated Explanations of Firearms (Part 7)

Attach one Pear Flower tube Lihua tong pear-blossom tube, an incendiary device to the head of a long spear. When facing the enemy, fire it. It can travel a distance of several tens of feet. Anyone hit by its chemicals will die instantly. Once the fire is exhausted, the spear can still be used to stab the enemy. This is the foremost fire implement for the front lines. In the Song dynasty, Li Quan a prominent military leader during the Jin-Song wars often used it to dominate in Shandong. The saying goes that the "Twenty Pear Flower Spears" have no equal under heaven.