China's trebuchet first appeared in the Warring States Period. It is a human trebuchet with only manpower. It pulls the tip (gun head) connected to the crossbar by manpower at a place far away from the trebuchet. The spear head is mounted on a wooden frame. One end of the wooden frame is tied with rope, which is used to hold the suitcase of stone bullets, and the other end is tied with many ropes for human beings to pull and throw stone bullets. The spear head is divided into single head and multi-head. A gun rack has at most 7 gun heads, which requires 250 people to throw.
The throwing car used in the battle between Tang Dynasty and Koguryo can throw more than 300 kilograms of stones, which caused heavy damage to the wooden gate of Koguryo.
Extended data
During the Three Kingdoms period, all countries attached great importance to the manufacture and use of throwing cars. In the famous battle of Guandu, Cao Jun destroyed the towers and chariots of Yuan Jun with a freely movable throwing car. This powerful throwing car is called "Thunderbolt Car". At that time, most of the throwing cars were fixed on the ground or buried underground, which was poor in mobility and time-consuming and laborious in installation. Later, in order to facilitate movement, wheels were installed under the gun rack. Because the gun rack is relatively heavy, it is still very troublesome to change the ejection direction at any time.
To this end, people invented the "whirlwind throwing car". This kind of throwing bolt can move horizontally and rotate, and can throw stone bullets in all directions, also known as "cyclone gun". During the Northern and Southern Dynasties, there appeared a "pat car" with guns on the car or a "pat boat" with guns on the ship, which could be maneuvered with the army and become a heavy weapon at that time. At the end of Sui Dynasty, Gong Wei and Shi Mi ordered the General Guard to supervise the manufacture of throwing cars, and made 300 cars at a time, which was called "General Gun".