Who invented the cannon?

Cannons are first documented in China during the 13th century, and were spread from there to the rest of the world. A cannon was discovered in Manchuria dating to the 1200s, and the earliest artistic depiction of a hand cannon is a firearm-wielding figure that was found in twelfth-century Sichuan. The earliest reliable evidence of cannons in Europe is account of the Moors using cannons in southern Iberia, during the siege of Cordoba.