Hardcore industry + Machiavellian cool writing. Zhang Li, a modern steel engineer, traveled back to the end of Wanli. With his obsession with folding rulers and "risk lists," he tried to rebuild a crumbling empire using furnaces and rails. The story starts from the restart of a mining town: abandoned furnaces are sleeping and mining tyrants are rampant. Zhang Li uses coke blasts to wake up the furnace fires, uses iron hoop wheels and account books to counter the county government and Donglin Qing's discussion, and gradually establishes the Mining Inspection Department, the General Administration of Munitions, the Mechanical School, the Railway Bureau, and the Coastal Defense Factory, forming an industrial epic of "technology-system-power" intertwined. The Liaodong War Furnace turned the tide of the war, the steam blast explosion severely attacked the conservatives, the railway bonds competed with gambling capital and the hearts of the people, the firepower of the steel armored ships in the South China Sea shocked the great powers, the iron-blooded New Deal liquidated the old aristocrats, until the general mobilization for the rebuilding of the empire. Zhang Li dealt with the emperor, Jin Yiwei, Dong Lin Qingyi, and overseas businessmen along the way. He not only had to fight against traditional forces such as mining tyrant Lu Shicheng, but also faced Lin Mo, a powerful enemy who was also a modern man and disguised as a Macau translator. He used the "modern vs. Modern" financial and public opinion showdown to create tension. The emotional line maintains the rhythm of the male channel: Qin Ruobing goes from supervisor to counselor and partner, Bai Sushu, Liu Ruoshuang and others provide help and ambiguous sparks in the technical and foreign trade line, and the brother line has Du Lingxiao's shadow guard and Han Er's workers awakening.