According to relevant records, in order to find a reason for invading China, Japan actually blew up the tracks of the South Manchuria Railway under the arrangement of the Japanese Kwantung Army, and also blamed this matter on China, and then after the September 18 Incident, Japan launched a comprehensive invasion of China, and even World War II was part of the war of aggression against China, which ended until August 15, 1945. During the invasion of China, the Japanese army committed inhumane acts against us, which was simply a bunch of inhuman hooligans. Coupled with the fact that Japan's military strength is stronger than ours, our country suffered heavy losses in the entire War of Resistance Against Japanese Aggression, and the Japanese army won many battles in major battlefields, almost occupying most of China, but the following provinces have never fallen. They are Ningxia Province, Sichuan Province, Shaanxi Province, Gansu Province and Tibet Autonomous Region.

In fact, it is not difficult to find that the above provinces have a common point, that is, their geographical location is very special, most of the places are mainly mountain ranges, and the terrain is very complex. Coupled with the very harsh climate environment in these places, the Japanese army could not bear it, and it would withdraw its troops halfway through the fight. Although the Japanese army was equipped with advanced weapons at that time, and the Japanese army at that time also had fighters, tanks, machine guns and other weapons, these weapons could not play a role in such a harsh environment.
In addition, the Japanese army knows the terrain of our country very well, but it does not mean that they can occupy it, for example, there are many jungles in Sichuan Province, and there are many peaks, no matter what kind of survey and study of the terrain of Sichuan Province by the Japanese army, no local people understand it, so they will definitely suffer losses when fighting. In the War of Resistance Against Japanese Aggression, the Sichuan army played a huge role in this war, and the entire identity was in a state of being a soldier for the whole people, they swore to resist the Japanese army to the death, and even sent troops to help other provinces resist the enemy.
It should be known that after the Battle of Wuhan, most of the main force of the Japanese army was in Wuhan, and the troops that had retired from Wuhan and other areas before were concentrated in Sichuan, so the Japanese army was really weak, and the reason for the lack of troops made it impossible for the Japanese army to occupy Sichuan. Especially after the outbreak of the Pacific War, the Japanese army first gained the upper hand on the battlefield in Southeast Asia, but then suffered a crushing defeat, and after being severely damaged, it was even more impossible for the Japanese army to occupy Sichuan Province. According to relevant data, Japan occupied 13 provinces of our country at that time, and 5 municipalities directly under the central government also fell.
In fact, from the perspective of the Japanese army's aggressive behavior, they are planned, before the war of aggression against China began, Japan has long been specially sent to China to survey the terrain, after Japan's surrender, our army found a Japanese version of the Map of China in the Japanese barracks, which includes a large province, as small as a village of rivers and trees, to know that China is vast and vast, even the locals do not have such an accurate map, when the Japanese army invaded China, they are also very familiar with the customs and customs of many parts of our country. We know China better than we Chinese. After Japan launched the war of aggression against China, the first target was China's three northeastern provinces, which was also a war that had been laid out for a long time. However, although the 14-year-long War of Resistance Against Japanese Aggression was very difficult, in the end Our country won the final victory.
We all know that World War II was also part of the War of Resistance Against Japan, and our country made great contributions to the world in World War II, and we must know that Japan's main purpose in World War II was to occupy the whole of Asia, and China was the first country they wanted to occupy, so in World War II, the main strength of the Japanese army was concentrated in China, and every time Japan occupied a part of our country, it would send troops to garrison. Therefore, the war line of the Japanese army was getting longer and longer, and in addition to those places occupied by the Japanese army, the battle between our army and the Japanese army has been continuing, so it has dragged down more than half of the Japanese army's strength, so that the Japanese army suffered a crushing defeat in the Pacific War, and in the subsequent wars, the Japanese army was almost repeatedly defeated. In the end, Japan also paid a terrible price for what it did, and with the unity of the sons and daughters of China, we finally drove out the aggressors and safeguarded the dignity of the nation.