THE FIRE LANCE: WORLD'S FIRST GUN
Song Dynasty soldiers strapped bamboo tubes filled with gunpowder to their spears. When ignited, they shot flames, shrapnel, and poisonous smoke at enemies. It was terrifying — and it worked.
By the late 1200s, Chinese engineers replaced bamboo with bronze and iron. The Heilongjiang hand cannon (1288) is the oldest surviving firearm — proof that the jump from fire lance to true gun happened quickly.