What is the real reason why Japan launched the 9. 18 incident?

First, immigration: establishing bridgehead and beachhead position for military aggression.

Immigration is a basic national policy of Japan. Only regular and targeted immigration can reflect Japan's future policy trend. 9. Before18, there were a large number of Japanese immigrants in Northeast China. Some of them came from Japan, some from Korea and some from Taiwan Province Province. Immigrants are not soldiers, but they play a more important role than soldiers. These immigrants infiltrated all classes and fields, and they established bridgehead and beachhead positions for Japanese military aggression.

The immigration policy is not only reflected in the Northeast, but also a large number of immigrants when the Japanese invaded Taiwan Province Province and Korea. Whether before or after the war, Japan still adhered to the immigration policy. Constant immigration has laid a solid foundation for military aggression and intervention.

Second, talents: control key departments and positions through talents.

Cultivating and recruiting talents is a common means in Japan. 9. In the decades before18, Japan trained a large number of military talents for the Northeast. These talents are of excellent quality and occupy many important military and political positions in Northeast China. After Zhang Xueliang inherited his father's business, he played the game of rats knocking down elephants and shooting aides and others, which caught Japan off guard. In the end, he did not escape the fate of the fall of the Northeast, because the roots of the Northeast have "rotted away". The key is that Japan controls the talents in Northeast China and many important positions. And it was not until the fall of Northeast China that it was discovered that even Zhang Xueliang's younger brother was incorporated by Japan.

In fact, before "9. 18", the situation in Northeast China was completely under the control of Japan, and it was only a matter of time before it was eaten. According to some data, about 80,000 people of the140,000 Northeast Army stranded in the Northeast during the "9. 18" Incident went to Japan. 1932 in the early days, the puppet Manchukuo army was only 85,000, while the old Northeast Army actually reached 80,000. In other words, before "9. 18", Japan controlled at least half of the Northeast Army.