Why did the Japanese choose to invade China from the northeast?

First, from the map, it is closest to Japan, which is a very important reason in itself.

Second, Japan invaded Korea, and Korea is completely under the control of Japan, bordering the northeast of China, so the next step is the northeast. Moreover, at that time, the northeast was rich in various resources, and Japan had a large number of immigrants in Manchuria, which was more suitable for rule. After the death of the Qing government, Northeast China, as the birthplace of Manchu, is also suitable for cultivating its own puppet regime. Compared with the opening up in the Central Plains, it will be very embarrassing in terms of geographical location and history. Geographically, it can only be transported by sea. Historically, the Central Plains was dominated by Han people, with a large population, which was difficult to control.

Third, although Taiwan Province Province is actually controlled, Fujian and Guangdong will also have shipping problems, and their populations are mixed. ...

At the same time, other places, whether in the Central Plains, along the Yangtze River or along the southeast coast (directly developing the northwest and southwest, the Japanese will not be so stupid) are not completely controlled by him. There are many concessions and interests of other countries, which are likely to cause great international disputes, which they do not want to see.

Compared with the Northeast, after the Russo-Japanese War, Russia lost a lot of interests in the Northeast, and Japan did not have more conflicts with other countries in the Northeast, so the Northeast is the most suitable to invade first. In addition, the resources in Northeast China are very attractive and the land is particularly fertile. In fact, the Soviet Union may have been ignored by Japan. After all, the European battlefield will make the Soviet Union neglect the Far East (at that time, there were not many Soviet troops in the Far East ... the core strength of the Soviet Union was still in Europe), and in fact there was the Japanese Kwantung Army.