Deep Space Gate: from Space Tinker to Star Forger

At the end of the 22nd century, human civilization is coveted by the high-dimensional predators "Scavengers", and the deep space defense lines are retreating steadily. The protagonist Lin Zhendong, as a structural engineer who was responsible for landmark buildings, was recruited to the space frontline during the war to repair damaged interstellar facilities. He has no system, no superpowers, and only relies on his ultimate understanding of mechanics, materials science, and macrostructure (imagination) to transform originally fragile civilian facilities into deadly space traps. He started by repairing the space station, then went on to design planetary engines and Dyson cloud defense networks, and finally turned the solar system into an indestructible war fortress through magnificent engineering miracles, guarding thousands of lights behind him.