At the end of the Ming Dynasty, the border army was defeated and the Tatar iron cavalry approached the city. However, the imperial court sent a powerless scholar Xie Chen to supervise the battle! All the civil and military officials in the dynasty were waiting to see him beheaded and sacrificed to the flag. Unexpectedly, Xie Chen opened a shabby book called "Tiangong Kaiwu" and actually built a red barbarian cannon and a magical arrow array that transcended the times. In the next battle, the Tatar cavalrymen will see what it means to be "a scholar who is angry and cannons wash away the ground"; the treacherous ministers in the court are waiting for their teeth to be broken by the abacus beads!
