Originally, Japan had three months to lay down the whole of China's plan, but after the real attack on China, they found that this was completely impossible, but their attack speed was also very fast, so many provinces and cities in China were completely captured, but there were also some cities that have been insisting, in fact, the Japanese army attacked the city also has a certain purpose, in addition to attacking some military strongholds, or because they need resources, the Japanese Army in World War II is to fight wars, Constantly plundering resources to sustain the development of the army.
When it was in addition to the Nanyue area or Sichuan and Xiang and other places, in fact, most of the other territories were occupied, and among the cities they attacked, there were also several cities that they were difficult to take, the most difficult of which should be Chongqing, when they invested a lot of money in order to attack this city, and the result was that until they surrendered, the end of World War II, the city was not taken down.
Since ancient times, Chongqing is a military stronghold, so there have been many wars in Chongqing, and in World War II, other cities are land wars, but for Chongqing, the Japanese army is directly dispatched to the air force, when the Japanese army in China's air combat is basically here, a full six and a half years of bombing, Chongqing has been sticking to it.
Especially in the Battle of Shipai at that time, the Japanese army dispatched more than 100,000 troops to besiege this town, and in the end the two sides ran out of guns and ammunition, completely relying on the white blade battle, stunned that the Chinese army won the war and saved Chongqing, when dozens of cannons were set up outside Chongqing, and also blocked the Yangtze River, it can be said that it was for the safety of Chongqing, made a very big sacrifice, China paid a lot, Japan's investment was also very large.
According to statistics, in these six and a half years of bombing, the Japanese army has carried out more than 200 bombing missions, more than 9,000 aircraft sorties, and it is precisely because of this that so many empty holes will be built in Chongqing, but after the end of the war, these air raid shelters have been used by everyone, and now they have become some characteristic hotels, or have become snack stalls.