Dressed as Yang Goudan, a poor young worker, after finishing a meal of steamed buns, he doesn't know where his next meal will be. But in his previous life, he was an industrial mechanic, and his golden finger could figure out the structure of all equipment at a glance! While my co-workers were still grabbing steamed buns, I had already used scrap parts to build the first fertilizer machine. The factory leaders knocked on the door overnight and asked me to be a technical consultant.