In 1931, Japan invaded the northeast of China, occupied the three northeastern provinces, and thus launched a war to invade China, and because of the non-resistance policy of the Nationalist government, Japan even claimed that it would take only three months to take China, but in the end it only ended up in the end of leaving China in ashes. At the end of World War II, in order to preserve the various vested interests in the war, Japan launched a series of crazy acts, and even put forward the slogan of 100 million jade fragments, in order to be able to put forward more conditions when surrendering, but the two atomic bombs of the United States made Japan realize the reality and finally had to declare unconditional surrender.

After the end of World War II, Japan's entire population has a cliff-like decline, so Japan began to establish a population recovery plan, in order to quickly restore the population, Japan adopted an effective method, although the population recovery speed is very fast, but it has been spurned by the world, chilling.
As an island nation, Japan's territory is not very large, and the war potential is not strong, so during World War II, Japan almost used the power of the whole country to start this war, in this case, Japan's economy and population suffered a great blow.
In the fourteen-year war of aggression against China, although the Japanese army had certain advantages, on the whole, it still sacrificed a lot of people, especially at the end of World War II, the US army and the Soviet Union annihilated a lot of Japanese troops, and even the Soviet Union directly captured hundreds of thousands of Japanese troops to carry out post-war reconstruction work in its country.
After World War II, the entire country of Japan was almost exhausted, so Japan set a policy in order to quickly restore the population, that is, to reduce the legal age of marriage for Japanese women to 13 years old, so that many Japanese women at that time married as a teenager, and if they did not marry after the age of 13, they would face a fine.
At the same time, Japan also stipulates that every Japanese family, if it has enough children, can receive a government-provided incentive payment, under such stimulation, many Families in Japan have had several children after that, in order to receive government subsidies in times of economic downturn.
Japan's approach is undoubtedly to treat women as fertility machines, although in a short period of time after the war, the Japanese population was restored to normal levels, but it was spurned by other countries, after all, the 13-year-old marriage age is too small, it is really chilling.
After World War II, many countries suffered a heavy blow, and in order to restore the population as soon as possible, a series of measures were taken, for example, Russia once lowered the legal age of marriage to 16 years old, but only Japan in the whole world has lowered the age of marriage to 13 years old.
Throughout World War II, the experience of Japanese women is undoubtedly tragic, and both before and after the war, Japanese women seem to be treated as objects to be sacrificed. Of course, this is also related to the social structure of Japan, and the status of Japanese women is not high, so they will have such treatment.