Tang Ke, a double master of mechanical engineering and civil engineering, traveled to the fictional Tang Dynasty "Tian Tang" and started from the official history of the Miscellaneous Manufacturing Bureau of the Ninth Grade Ministry of Industry. Relying on modern knowledge and through technological innovations and engineering miracles, he managed step by step in the turbulent officialdom, and eventually became the Minister of the Ministry of Industry. Using science and technology as the engine, he promoted the national power of the entire dynasty to take off and create a prosperous age.