I, the God-Level Inventor, Bombarded Li Zicheng at the Beginning

At the end of the Ming Dynasty, Li Zicheng, the king of Chuang, led his men to attack a county town. I actually saw a super cannon with a gun length of 36 meters. The moment he led the attack on the county seat, he was directly fired upon by submachine guns. During the retreat, the super cannon fired! A shell fell, and countless 50,000 elite soldiers died instantly. Chang Shengyang, who had been struggling for 20 years, started to destroy Li Zicheng and kill Zhang Xianzhong. The feat of overthrowing the Ming Dynasty and eradicating the Qing Dynasty. And set off the vigorous industrial revolution in human history in advance! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.