Traveling through the Tang Dynasty, Qin Duyuan became an unlucky craftsman who was caught secretly making firearms. Emperor Zhenguan Li Shimin personally supervised the execution. Before the sword fell, he shouted: "I can make the Tang Dynasty travel thousands of miles without using oxen and horses!" The civil and military officials in the court sneered, but Li Er ordered people to stop. No one knew that he had steam engines, steel furnaces, and railway drawings in his head. Three months later, the first steam engine roared, and the streets of Chang'an were deserted; a year later, the steel behemoth crushed the Turks, and Li Shimin knelt down and begged him to become the national advisor. While the Eight-Power Allied Forces were still playing with swords, Qin Duyuan was already driving a steam chariot, carrying the Tang army around the world!
