The wind blows and the snow flies, and the cold air penetrates the bones. In the cold winter of September, a certain brigade of Shenyang Joint Logistics Support Center organized officers and soldiers to go deep into the "secret camp" where the Northeast Anti Japanese United Front was stationed more than 80 years ago, and conducted practical training in the ice and snow. In the evening, stepping on thick snow, I rushed to the wilderness camp of the brigade. Looking up, the branches were bent by the snow, like tightly stretched bows. The cold wind blew, and the snow on the branches occasionally fell. The "air raid" alarm suddenly sounded, and the brigade commander decisively ordered: "The ammunition support battalion should immediately send a team to advance and open a field ammunition depot!" Inside the ammunition team's tent, officers and soldiers quickly dressed up and drove their armored vehicles loaded with ammunition deep into the snowy field. After arriving at the designated area, they used convenient equipment such as snow camouflage nets to hide the field ammunition depot built on tanks in the snowy wilderness. After nightfall, the temperature drops sharply. The commander of the ammunition squad, Qin Qiang, decided to organize officers and soldiers to camp separately from the field ammunition depot. In the darkness, they selected camping sites based on the terrain and topography, then lit their headlights and quickly cleared the dead branches and rocks on the snow. Sergeant Li Long took out a single soldier's down sleeping bag tent from his backpack, extended his arms into the compression band ring, and shook violently, turning the tent into a fan. Next, he connected several sections of carbon fiber material keel, passed through the eaves channel of the tent, and inserted both ends into the snow. After the skeleton was supported, Li Long unscrewed the air intake valve of the air cushion at the bottom of the tent, and a single soldier tent was initially formed. He immediately fixed the tent with ground nails and completed the snow camouflage. From a distance, individual tents were faintly visible in the wind and snow, with the front raised high like a horse's head and the back hanging low like a ponytail, like modern versions of "horse racks" of secret camps, forming an arch defense over the field ammunition depot. As the night grew darker and the temperature dropped to minus 20 degrees Celsius, soldier Yang Xilin inside the tent was awakened by the heat. Originally, because he was worried about the cold at night during camping in the wilderness, this experienced veteran specially wrapped himself in a few extra clothes before going to bed. Unexpectedly, he quickly broke out in sweat. Outside the tent, the wind swirled in the treetops, rolling up crystal clear snow particles and making a fine rustling sound. In the quiet of the night, the assessment team dispatched miniature unmanned aerial vehicles with infrared thermal imaging capabilities to conduct a "carpet style" reconnaissance of the camping areas of officers and soldiers. After several detections, not only was there no "red portrait" visible on the drone screen, but not even a "small red dot" appeared. Finally, the assessment team notified the ammunition squad to report the location and found this camping area. The temperature of a tent reflects the technological content and practical considerations of winter training support for troops in cold regions. In severe cold conditions, individual tents need to be able to keep warm, avoid opponent's thermal imaging reconnaissance, and be lightweight and easy to carry. The design difficulty is indeed very high. In recent years, we have conducted joint research and experiments with multiple manufacturers to develop this inflatable individual down sleeping bag tent with anti infrared thermal imaging function. "Qin Qiang told reporters," The tent uses a new material that can avoid thermal imaging reconnaissance, prevent rain and wear, and adapt to the outdoor environment of minus 40 degrees Celsius. "To verify the warmth effect, we took off the camouflage coat and cold boots, entered a single soldier tent that had been open for about 10 minutes, pulled up the down sleeping bag and tent zipper, and pasted the sealing tape... After a while, the temperature inside the tent began to rise. The reporter saw that the down sleeping bag is also equipped with inflatable pads and moisture-proof layers, making it comfortable and warm to lie inside. Not only that, the tent has a good light blocking effect, even if the headlights are lit inside, there is no trace of light outside the tent. It was discovered that two ventilation valves were installed inside the tent. When the temperature exceeded 26 degrees Celsius, the valves would automatically open, allowing for convection of hot and cold air. The space inside the tent is also not small, enough to store jackets and carry supplies and equipment with you. The front and sides of the tent are also equipped with hidden "cat eyes" for officers and soldiers to observe the external situation at any time. After putting on his coat and getting out of the tent, the strong temperature difference made the reporter shiver uncontrollably. Looking at the individual tents in front of him, the reporter tried to use an infrared night vision camera to take several photos of the soldiers staying overnight. Unexpectedly, in the photo, Yukino and the tent blend together, and even the outline of the tent cannot be seen. At around 4am, the ammunition squad received the order to "deliver ammunition forward", and the officers and soldiers put on their clothes and crawled out of the tent. At this time, the snow had already covered their ankles. They quickly withdrew their camouflage, shook the snow, pulled out the dragon bones, removed the ground nails, twisted the air valve, and rolled up the sleeping bag. When the reporter checked the clock, it was found that the soldiers had completed the withdrawal of the individual tent in less than two minutes. After gathering, the officers and soldiers boarded the ammunition truck and headed straight to the "battlefield"... After completing the "forward delivery of ammunition" task, they followed the officers and soldiers back to the ammunition squad's field camp. Walking into the class tent, a warm breeze hit me. The reporter was curious: "The officers and soldiers have been away all night, why is the tent still so warm?" Qin Qiang pointed to the burning stove in the tent and said, "The stove burns biomass pellet fuel, which is smokeless and odorless, and is not easily exposed during wartime. We also added fuel buckets to the stove, and one bucket of fuel can burn for more than ten hours, ensuring that the temperature inside the tent is always above 20 degrees Celsius." Sincerely sighed, the temperature of a tent in the vast snowy field reflects the new changes in scientific support, and is a vivid epitome of the increasing confidence of the joint logistics support force to "pull up, go up, and keep it good" at any time. (New Society)