Qianfo Hill's "underground kingdom": the area is comparable to the 7 football fields.
source: the Qilu Evening Newspaper
through the vegetation and mountain in Qianfo Hill, Ji'nan, it is rare to know that nearly 50 thousand square meters of air defense works are hidden under it. It has stored bananas, but with the fruit and vegetable market cold storage completed, leaving only banana flavor. As time goes by, the future of Qianfo Hill's air defense project may be a wine based storage base. The southern side of the mysterious world main city under the "One City mountain" is the place where Qianfo Hill is located. It is a "One City mountain" in Ji'nan. It is not only natural and beautiful, but also rich in historical and cultural background. Few people know that Qianfo Hill has its other side: there are hidden air defense projects in the mountains. Many old Ji'nan will not be familiar with Qianfo Hill's air defense works. Many people in 70s of last century had sweated for the construction of Qianfo Hill air defense works. But young people know little about its origin. The air defense project in Qianfo Hill was built in 1975 to implement Chairman Mao's instructions of "digging deep holes, accumulating grain extensively and not seeking hegemony". The total area of the project is nearly 50 thousand square meters, and the area is equivalent to the 7 standard 11 person soccer field. Qianfo Hill is lush in the end of spring, and the visitors are weave. When many tourists are playing, few people pay close attention to the entrance around Qianfo Hill. There are more than ten holes in Qianfo Hill surrounding the underground air defense works. From the north entrance to the air defense works, two or three turns and two kilometers to the interior of the air defense project. Walking in the hole will not only cool but also smell the mouldy smell that has not been ventilated for a long time. The light inside the project is not good enough. The car must turn on the light before it can go in the shelter. The air raid shelter is 7 meters wide and 7 meters high, and trucks and tanks can come in. The main purpose of the construction of air defense works is to store materials and evacuate the masses in the presence of air. The passageways must be wide enough and high enough. The temperature of the cavity is kept at around 15 C for a long time, and it is cool in winter and warm in summer. When winter enters the air raid shelter, it will feel the warmth of spring. The interior of the air defense project is all in all directions. It is a huge labyrinth. If it is not careful, it may lose its way. There will be an incandescent lamp on the top of the air raid shelter for more than ten meters, and the electric light will be closed for many years. Turn on the electric light. Although the intensity of the incandescent lamp is strong, the whole air raid shelter is still dark, which makes people dare not go forward. It may be because the humidity inside the cavity is too large that the incandescent lamp is in bad contact and the lights are dim and dim, which adds a bit of mystery to the air raid shelter. Once the banana storage base air raid shelter was a common arched structure, the ground, walls and arched ceiling were made of concrete, which was smoother. The anti - cavitation ground is relatively hard, and is also poured into concrete. The driving is very stable. The walls and ceiling of some air raid shelters were not painted with concrete, and bare the original appearance of the mountain stones. The surface of the stone is very smooth. Many spiders have settled in the crevice of the stone. There are insects jumping up and down at the gap of the stone. The air raid shelter is covered with dense lines of communication cables, wires, water pipes and so on. Because of the long time no one cleaned, the pipeline was covered with dust. Many pipelines were replaced in the 90s of last century, because the replacement pipes left a lot of debris on the floor. It is hard to imagine that the air raid shelter has been built for nearly 40 years. Later, due to the relaxation of the international situation, many air raid shelters were converted into civilian and civilian use: civilian and wartime military. In the 80s of last century, the Qianfo Hill air raid shelter also used one more purpose: fruit storage. The temperature and humidity of the Qianfo Hill air raid shelter are very low. Compared with the cold storage, the storage cost is very low, attracting more than 20 banana vendors to store bananas. With the use of the Eight Mile Bridge cold storage, the street vendors who stored bananas in Qianfo Hill also disappeared. Now only a few isolated banana boxes lie in the air raid shelter, where bananas have been placed and some dry banana skins remain, and the warning words "bananas are forbidden" on the wall are blurred. A new type of chandelier will appear on the arched ceiling of an air defense cave in the air defense cave. According to reports, the future Qianfo Hill anti air hole may be developed into a wine theme park, as a wine sales and marketing base. There are more than 60 empty wine barrels and two decorated wine shelves inside the shelter. The air defense works in Qianfo Hill used to be a key project of civil air defense construction in Ji'nan. When walking, it is not hard to imagine how much effort was made to build it at that time, and from time to time, there were thousands of people in the mind. Almost everyone who passed through the 60s and 70s of last century had a series of stories about "air raid shelter", telling the vicissitudes of history. Mischievous children also left many graffiti in those abandoned air raid shelters, telling the innocence of childhood. Now many air defense facilities like Qianfo Hill's air defense works have been useless by heroes. How to comprehensively develop air defense facilities left behind in preparation for war is becoming a new topic in the era of peace and economy.