Wan Jiaojiao instead.The Qin dynasty's technology wasn't very advanced, but they did have cannons.However, those cannons similar to the Red-Clad Cannon had a rather disappointing level of power and a... unique work in the world."Zhou Ping'an watched Li Chen put down the cover of the Book of Later Han, ancient and worn, something he had never seen before."My lord, is that a unique copy in your hands"...