As soon as Lin Wanxing opened his eyes, he changed from a senior engineer holding CNC machine tool drawings to a young apprentice screwing screws in the Hongxing Machinery Factory in the 1980s. The good news: She is still young, her parents are still alive, and she did not experience the subsequent wave of layoffs that destroyed her family and destroyed her family. Bad news: The factory is on the verge of bankruptcy, technology is lagging behind, people are distracted, and her entire family is on the laid-off list. The workshop director pointed at her nose and scolded: "It's a shame for a little girl to not learn how to sew and come here to sniff the smell of engine oil with a bunch of big men!" A skilled technician in the factory who relies on his old skills: "Young girl, don't talk on paper here! Do you dare to change the drawings of Soviet experts?" Faced with everyone's doubts and rejection, Lin Wanxing just picked up the tools silently. Later - when Lin Wanxing used an improved drawing to improve the accuracy of a scrapped old Soviet machine tool by 0.01 Mm, the workshop director was so shocked that he dropped his cigarette. When Lin Wanxing solved the technical bottleneck that had plagued the entire factory for half a year with his bare hands, the old face of the technical expert turned the color of pig liver. When Lin Wanxing led the team to conquer the technology and won the first foreign trade order for the factory, the whole factory was excited! One time, a cold-faced man who came to the factory to inspect and accept military orders frowned: "Your batch of parts has unqualified tolerances." Everyone was sweating, but Lin Wanxing stepped forward with a vernier caliper, neither humble nor overbearing: "Comrade, the standards of the drawings you brought are outdated. According to my standards, the performance has improved by at least 20%." The man looked at the girl in front of him, who was covered in oil but whose eyes were astonishingly bright. He was silent for a long time and said slowly: "You, follow me to the Military Research Institute.