Li Ye, a student of modern history, accidentally traveled to the heyday of Zhenguan. He discovered that this seemingly prosperous era was actually dominated by aristocratic families monopolizing resources, and technological development was stagnant. Armed with an industrial encyclopedia covering ancient and modern times, Li Ye was determined not to take the usual path. He started by improving tools and firing cement, then founded a workshop outside Chang'an City, and gradually developed time-honored inventions such as steam engines and spinning machines. During this period, he received strong support from the discerning businessman's daughter Su Qing and her family. Faced with all kinds of obstruction and suppression from the wealthy family headed by Cui Chengji, Li Ye relied on his advanced technology, precise business strategies and grasp of history to unite with the reformists in the court to resolve crises one after another, promote the comprehensive reform of industry, military, and people's livelihood in the Tang Dynasty, and help Li Shimin create an unprecedented "industrial Zhenguan" era.
