All growth has been honed by the ordinary in the early winter morning, and the remaining snow on the northern land has not dissipated. Inside the parking shed, battle eagles were neatly arranged and stood with their heads raised. Another flight day. Dressed in dark blue work clothes, a standard winter hat on the head, and black work shoes on the feet, the maintenance personnel of a certain brigade of the Air Force Aviation Brigade of the Northern Theater Command disembarked and entered the field to begin daily aircraft maintenance and support work. In a pair of eyes, there was an increasingly focused gaze. The north wind howled, and every hand held by the reporter was soaked in coldness. In the distance, the roar of breaking through the sky came, and a fighter jet slid off the runway. I saw the nose lifted and the fighter jet lightly leaped out of the valley and headed towards the sky. Looking down, a row of bungalows next to the hangar are the positions of the repair platoon. Entering the repair workshop, various equipment and consumables are neatly and orderly arranged. A box next to the control panel caught the attention of the reporter. Inside, there were aluminum plates filled with drilled holes and rivets, with names and scores marked on them. Some of the rivets were marked with black pens. Originally, this was a special pile of "aluminum sheet test papers", with Sergeant Sun Hongkui responsible for scoring, recording completion time, and storing them. "We have to organize 3-4 small assessments like this every month!" Sun Hongkui moved a full basket of aluminum plates from under the table. "We can't bear to throw away these consumables and keep them for practice." The reporter casually picked up a piece from the box, which was the "test paper" of First Class Sergeant Zhao Qingqin. The black pen marked "99 points" caught the eye. "Where did this point go?" the reporter asked. Sun Hongkui smiled and took the words, "Take one point off him, I'm afraid he'll be proud." Zhao Qingqin's hands were covered in yellow calluses, and even the inside of each finger joint had signs of yellowing. When using a riveting gun, he likes to use his fingertips because it can "better sense the force of the tool.". Some people say that cross-talk actors have four subjects, which are 'speaking, learning, teasing, and singing', and repair majors also have four techniques - 'car, pliers, riveting, and welding'. Zhao Qingqin, who has always emphasized his inability to express himself well, talks incessantly about his profession, and awkward professional terms are tightly organized into language. Before meeting with the reporter, Zhao Qingqin and Sun Hongkui "specially washed their coats". On the day of the meeting, the reporter still saw the stains on the coat that were difficult to remove. Sun Hongkui said, "Just like a sniper, bullets are fed out one by one. Our mechanics rely on drilling holes one by one and burning welding rods one by one." The soldiers in the repair platoon are very ordinary. Before joining the army, Sun Hongkui worked as a security guard, Zhao Qingqin and his uncle worked on auto repairs, and Du Chengguo carried big bags at the fertilizer plant... Now they are gathered together due to their expertise in mechanical engineering. First Class Sergeant Du Chengguo was still working in 1998. When working on the construction site, I often see planes flying by in the sky. It was also in this year that the J-10 made its first flight, and China's aviation industry made epoch-making progress. "One hand carries national property, the other holds the lives of comrades." Before the fighter jet takes off, the maintenance personnel are meticulous and must not let the fighter jet carry any problems to heaven. Over time, with the development of occupational OCD, Du Chengguo used this metaphor: "It's like locking a door. Even if you lock the door when you go out, you will always come back to confirm after taking a few steps." All growth has been honed by ordinary experiences. Time not only gives to the old class monitor