The night is deep, a training ground is stationed on the plateau, and the cool breeze is blowing gently. Liu Hongping, a artillery technician from a brigade of the 77th Group Army, checked a maintenance data item in the "Equipment Technical Archives", rubbed his sore eyes, and returned to the artillery live fire support task four months ago. That evening, the temperature at the training ground suddenly dropped to over minus 20 degrees Celsius. Liu Hongping, carrying a repair kit, shuttled back and forth in the car gun field, repairing artillery vehicles. The artillery will participate in live fire drills on the plateau the next day, but one of them unexpectedly malfunctioned. "Failures must not stay overnight." At the critical moment, Liu Hongping volunteered to enter the chariot, scanning the "viscera" of the chariot in an all-round manner like a CT scan. After several hours, he finally determined the fault point and eliminated it before the drill. The next day, when Liu Hongping saw the artillery unit playing "full court", his frowns widened, and the twinkling joy in his eyes replaced the tiredness of fighting day and night. When talking about Liu Hongping, his comrades praised him endlessly: "Monitor Liu is a 'miracle doctor' of artillery. No matter what difficult and complicated problems artillery encounter, he can apply the right medicine to the case and eliminate the disease with the right medicine." However, when he first started learning to repair artillery, Liu Hongping did not suffer less. In order to improve the operation level, Liu Hongping worked hard to learn basic theories while verifying them with practice, continuously improving his ability to solve problems. In order to figure out the direction of the equipment line, he got into the car body and explored the line over and over again. His notebook also kept a dense record. With a great deal of effort, Liu Hongping's maintenance ability has continuously improved. During a major military exercise, a gun suddenly malfunctioned and was unable to continue operation. At this point, the temperature inside the gun barrel is too high, and if a blast occurs, the consequences will be unimaginable. Liu Hongping rushed to the launch position. After some investigation, he determined that part of the incompletely burned gunpowder had blocked the gun bore. Immediately, Liu Hongping opened the gun bolt, carefully removed the unexploded shells, cleaned the barrel, and successfully lifted the danger. Four years ago, a group of new vehicle mounted howitzer units were installed. Shortly after, Liu Hongping received a notice to participate in the Army artillery maintenance competition. During his preparation for the martial arts competition, he intensified his studies and never missed any opportunity to learn martial arts from his master. The manufacturer came to the army to upgrade equipment, and he followed the class to learn throughout the process, discussing maintenance skills and battlefield support problems with factory experts. When it comes to Liu Hongping, experts praised him as "a person who has a strong sense of motivation, who is always digging into problems and never stops until they understand them." On the day of the martial arts competition, Liu Hongping kept a calm mind and calmly responded, achieving accuracy in every step. In the end, he helped the team achieve good results. Over the past 21 years since his enlistment, Liu Hongping has tackled hundreds of technical difficulties in equipment support, mastering over 10 types of armor, individual artillery, and firearms maintenance technology. This year, nearly 40 years old, he has put more energy on helping new people, hoping that they will grow rapidly and become the main force in their respective positions in the future. In the process of teaching, Liu Hongping always took the trouble and poured all his resources into teaching. He often reminds newcomers, "We should think more about why and cross more obstacles, so that our quality and ability will be more solid." "What we learn is technology, and what we inherit is spirit." Watching the disciples' skills become more and more exquisite, a sense of happiness surges in our hearts