Luo Yi, a maintenance worker at an agricultural machinery factory in a small town, accidentally obtained the technological inheritance of a medium-sized civilization in an alien galaxy. Starting from repairing tractors, he built "smart engineers" that changed lives and brought dying factories back to life. Orders poured in, attracting national attention. Luo Yi devoted himself to the research and development of the country's most important weapon and created the shield to protect the country. When alien civilization covets the earth, he takes humans out of the earth and into the sea of stars. In the crisis-ridden interstellar alliance, he used his wisdom and hands to push earth's civilization to the top of the stars step by step, and finally transformed into a master craftsman to protect his homeland.
