Boom! When he woke up, Yan Zhenshu, a doctor of engineering, became a death row prisoner in the Tang Dynasty and was to be executed in three days. In the prison, the governor was sarcastic at him. Yan Zhenshu cut off a piece of hair and drew a sketch on his prison uniform: "Go, give this steam engine blueprint to your father, and say that I can make the Tang warship travel thousands of miles a day." Three days later, he was pardoned and released from prison, but everyone in Chang'an laughed at him as a madman. Until the Turks' 200,000 cavalry moved south, the dynasty was in danger. On the beacon tower, Yan Zhenshu patted the big dark guy next to him: "Now, let these barbarians see what the industrial revolution is."
