Feng Yadong is an artillery technician in a brigade of the 76th Army Army. He and his comrades were rushing to the target area, and a live-fire exercise was waiting for them. Although I have experienced countless practical drills, this time, Feng Yadong, who has mastered his maintenance skills, is under a lot of pressure. The entire exercise was embedded with tactical background, and all faults must be dealt with in the rhythm of the battlefield. This tests not only the equipment performance, but also the full-region combat capability of artillery in the new era.