Chen Yan, a top student in the Department of Modern Architecture, accidentally traveled to the fictional ancient times and activated the golden finger of the "Infrastructure Deduction Simulator" to simulate various engineering plans and realize the optimal solution. He started in the deserted village "Qingheli" in the south. He first used modern agricultural knowledge to improve the saline-alkali land, and then used deduction technology to build fireproof wooden buildings and cement ditches, gradually developing the poor village into a commercial road hub. In the process, two-dimensional inspiration was integrated to create special industries such as "picture scroll workshop" and "organ stage", attracting the attention of Jianghu customers, aristocratic families, and even the royal family. Faced with the suppression of local wealthy families, bandit robbery, and covetous sects, Chen Yan relied on the city defense map, the crossbow array, and the intelligence network that were systematically deduced to defeat the situation one by one. Finally, based on the "City of Hundreds of Industries", he promoted the entire dynasty to start the "Hundreds of Industries Innovation", allowing the two-dimensional culture to collide with ancient civilizations to create bright sparks, and achieve the legend of "Infrastructure Master".