It is a thick and mottled cave wall, telling the memories of beacon fires and settling the turbulent years of the mountain city; It also contains bright kitchens and stoves, from which aroma wafts - in recent years, the air raid shelter hotpot restaurant has become a new landmark of Chongqing's characteristic cultural tourism, where diners not only taste the warmth of life, but also the thickness of history. During the War of Resistance Against Japan, the invading Japanese army carried out over six years of indiscriminate bombing on Chongqing, known as the "Chongqing Bombing" in history. At that time, the people of Shancheng dug a large number of air raid shelters based on the terrain of the mountain, playing an important role in preventing enemy air raids. In the 1960s and 1970s, the area of air raid shelters in Chongqing further increased. To this day, this city still retains a considerable number of air defense projects. In modern urban construction, air raid shelters cannot become forgotten corners. Since 2018, Chongqing has implemented the "Mountain City Dongtian" civil air defense project to serve the people, and a number of old air defense projects have achieved a "magnificent transformation" and integrated into citizens' lives. Air raid shelter hotpot restaurants are one of the representatives. A pot of hot and boiling, a hole of time long. A hot pot restaurant on a pedestrian street in Jiulongpo District is bustling with customers. Entering the store, what catches the eye is a winding air raid shelter over 300 meters long. The photos, physical objects, and newspapers inside the cave have restored the historical events of Chongqing for over half a century, as well as the living scenes of citizens in different eras. At the end of the arched cave, classic anti Japanese themed films such as "Tunnel Warfare" are playing, reflecting the true colors of this war preparedness project. The exhibition inside the cave took a whole two years. ”The person in charge of the store, Lao Xia, told reporters that this cave was excavated more than 50 years ago. Some customers who had participated in the excavation exclaimed, "The hard work and sweat of those years were not in vain!" The customers' affirmation strengthened his determination to make good use of the air raid shelter and open a good specialty store. Traditional air raid shelters have poor ventilation and are humid and hot. Lao Xia reasonably planned the layout of the cave and the distance between the dining tables, introduced a modern ventilation system, which not only maintained a strong atmosphere of fireworks, but also did not make customers feel crowded or noisy. Like Lao Xia, the operators of several air raid shelter hot pot restaurants are constantly optimizing the settings inside the caves, striving to bring customers higher comfort and better experience. No matter how we decorate and decorate, we will not change the engineering structure or destroy the original historical appearance. ”A business owner talked about his feelings: Only in this way can the air raid shelter, which serves as the "underground Great Wall," be transformed into a food house with stories and memories. No matter how far we go, we must never forget why we set off. ”The relevant person in charge of the Chongqing Municipal People's Air Defense Administration introduced that they guide the users of air raid shelters to comply with legal regulations, maintain the protective function of the shelters without being affected, and ensure that air raid shelters can provide safe refuge space for citizens in case of any situation, such as raising kitchen smoke during peacetime and avoiding gunpowder during wartime. (Outlook on the New Era Network)