When World War II broke out, France only insisted on one month, while Japan fought for more than ten consecutive years. This is not the case, at the outbreak of World War II, France's comprehensive strength was actually at the forefront of the world, and only a few developed countries such as the United Kingdom were eligible to be compared with France. Why, then, was France so dismal in the wartime that it was forced to surrender after only a month of fighting?
France's enemy at that time was Germany, which was a warlike country in itself. Because of the First World War, Germany was hit very hard, and also signed a number of humiliating treaties, germany was full of disastrous defeats, and they held back for many years to find the opportunity to start World War 2. Therefore, when the war broke out, the German soldiers were like wolves, but France lost its former sharpness because of years of peace, and there was no way to confront Germany, so the French top brass only insisted for more than a month before being forced to surrender and let Germany occupy its own land.
The countries that Japan attacked at that time were mainly in Asia, and the comprehensive strength of Asian countries was generally relatively weak, and there was a big gap with Japan. In the process of continuous fighting, Japan scavenged for resources everywhere, making its comprehensive strength stronger. At that time, China's national strength was relatively weak, and it could only weaken the comprehensive strength of the Japanese army little by little, allowing them to move from a large-scale attack to the stage of war defense. In the extremely arduous War of Resistance Against Japan, China's comprehensive strength gradually increased, Japan's strength became weaker and weaker, and the balance of strength between the two sides underwent obvious changes. After the defeat of Germany at the end of World War II, Japan was isolated and helpless, and was attacked by the United States and the Soviet Union, and finally Japan, which was exhausted, was forced to declare its surrender and accept punishment as a loser.
In other words, Japan only selected some weaker opponents, and if Japan had fought Against France at that time, it was likely to be defeated by France.