This is based on the ancient era where people still in the Iron age.
A lot of weapon use in the war time. Let’s count down the 10 deadliest ancient Chinese weapon
The first is sword and dagger
second long range weapon
Arrow and bow
Third Long weapon
Mechanical Concealed weapons
Ultimate Flying weapons
The Best of the best, but still a mystery. Because no one ever see the weapon shape.
This is so secreat claim that no one except the emperor young chun and his assasint see this