Siheyuan: Don't Mess with That Technical Geek

Traveling through the 1960s, Lin Yuanzheng became an orphan who fled to Forty-Nine City. Hungry and living under the shelter of others, he became the nephew of "moral model" Yi Zhonghai. Fortunately, he can see the proficiency! Maintenance +1, fitter +1, drafting +1... From repairing pallet trucks to repairing machine tools, from apprentice to chief engineer. Yi Zhonghai wants him to take care of himself in old age? Are the people in the courtyard trying to take advantage of him? Sorry, my technology is only burned for the rise of great powers. This is a story about a technical geek who used a file to create an industrial legend.