Repair Technician Ai Shajiang of a Brigade Under the 76th Group Army: A 'Hand-Built' Unmanned Vehicle Proves Its Worth
In summer, on a training ground in the Gobi Desert, wind and sand fill the sky. A strangely shaped unmanned vehicle drives across a rutted dirt slope, its tires crunching over gravel with a rustling sound. At the scene, fellow soldiers exclaim in admiration: "It really is a fierce 'mountain wildcat.'" And its 'owner' is none other than Ai Shajiang, a repair technician in a brigade under the 76th Group Army.
When asked about his 'connection' with unmanned vehicles, Ai Shajiang jokes: "I was 'worn out' by hauling supplies into it."
During every field training exercise, when preparing supplies, they had to transfer dozens of cases of drinking water and provisions from the company to the vehicle park. Soldiers would run back and forth several times, gasping for breath and drenched in sweat. During one supply-hauling session, a soldier muttered offhandedly: "If only we had an unmanned vehicle to carry the supplies, we wouldn't have to work ourselves this hard."
The speaker had no particular intention, but the listener took it to heart. The idea of building a small unmanned vehicle took root in Ai Shajiang's mind. During that period, as soon as training ended, Ai Shajiang would bury himself in the repair workshop. The professional blueprints for unmanned vehicles were like a "book from heaven" (天书). Confronted with dense circuitry, he started from the basics, called manufacturers' engineers whenever he ran into problems, and endured blisters from the soldering iron on his fingers that healed only to form again—yet he never once thought of giving up. Late at night, his figure was always present in the study room, the faint glow of a tablet illuminating his focused face.
Breaking through on the power system was a tough nut to crack (硬骨头). The training site had steep slopes and abundant loose rock, which ordinary motors could not handle. In response, Ai Shajiang not only combed through every old equipment manual in the storeroom but also ordered multiple mechanical engineering books online to study, and used rest time to exchange experience with fellow soldiers. After more than two months of hard work, a 'hand-built' (手搓) unmanned prototype vehicle was assembled. However, the first field test ended in failure—the vehicle traveled 200 meters and then suddenly 'went on strike,' stopping in place. No matter what Ai Shajiang did with the controls, it would not budge.
Ai Shajiang looked at the scene before him, his heart a tangle of emotions. This prototype had been built with his blood and sweat; the wiring connections alone numbered over a thousand, each soldered by hand.
After a brief moment of dejection, Ai Shajiang sat down beside the vehicle and began checking for the fault. He carefully inspected the circuitry line by line, not overlooking a single detail.
"Found it!" After several hours of troubleshooting, Ai Shajiang finally discovered the cause of the fault at an inconspicuous connector—a component had come loose while the vehicle was in motion. When he carefully re-soldered and reinforced the component, the unmanned vehicle was 'fully restored to life' (满血复活).
After multiple rounds of optimization and improvement, the prototype's performance grew steadily better—its load-bearing capacity is robust, capable of transporting supplies weighing over a hundred jin (斤) across complex terrain; the roof-mounted camera is fully functional, capable of taking photos and recording video in real time; and with the addition of multiple functional modules, it can carry out a diverse range of transport tasks.
During one combat-realistic training exercise, the unmanned vehicle completed its designated subject with outstanding performance. At the scene, brigade leadership offered repeated praise: "This unmanned vehicle is really useful!"
"In the future, I also want to add a 'buddy mode' to it," Ai Shajiang said, walking up to the unmanned vehicle and gesturing as he spoke. "Have multiple vehicles operate in coordination to help the unit carry out complex and varied tasks."
Now, more and more fellow soldiers are joining Ai Shajiang's maker team. During rest time, everyone gathers together to work out plans for upgrading the unmanned vehicle. A 'technology innovation fever' (技术革新热) of dedicated problem-solving has quietly spread throughout the barracks.