Da Qin: Use Artillery to Travel Across Time, This Artillery Is a Trebuchet

The artillery drillers who traveled through time to become the siege force of the Qin State were preparing to see the artillery of the Qin Dynasty. The master pointed to the outside of the tent - a three-legged wooden frame as tall as a person, with wooden poles running across it. Do you call this a cannon? Is this thing also called a cannon? I'm afraid the mechanics I learned in my previous life will be used here.