1. Root cause: In the early 1930s, the world economic crisis occurred, and the Japanese economy suffered heavy losses and fell into extreme difficulties, which led to a political crisis. Under the internal and external troubles, the Japanese fascist forces decided to break through the shackles of the Washington system on Japan and seize the Northeast when Britain and the United States were busy coping with the crisis and Chiang Kai-shek's large-scale "suppression" in order to get rid of the predicament and dominate the world.

2. Direct cause: At about 22: 20 on September 193 18, a detachment headed by Captain Kawamoto of the Liutiaohu detachment of the Japanese Kwantung Army Railway Guard, in the name of inspecting the railway, was in Fengtian (now Shenyang), about 7.5 kilometers north and 800 meters south of Liutiaohu, the resident of the Northeast Army.

And put the bodies of three China people dressed as soldiers of the Northeast Army on the scene as evidence that the Northeast Army destroyed the railway. After the explosion, Japanese soldiers stationed in China Beidaying and Shenyang City were divided into two roads, north and south, and attacked China Beidaying.

Brief introduction of the September 18th Incident

The September 18th Incident, also known as the Fengtian Incident and the Wicker Lake Incident. It was an incident in which the Japanese Kwantung Army stationed in the northeast of China suddenly attacked Shenyang on September 193 18, 2008 and occupied the northeast by force. The September 18th Incident was the beginning of Japanese imperialism's attempt to conquer China by force.

1931September 18 night, the Japanese kwantung army, entrenched in the northeast of China, blew up the Japanese South Manchuria railway track built by the railway "guard" near Shenyang Liutiao Lake and blamed it on the China army. Using this as an excuse, the Japanese army shelled the North Camp of the Northeast Army in China, creating the "September 18th Incident" that shocked China and foreign countries.

The next day, the Japanese army invaded Shenyang and successively invaded the three northeastern provinces. 1February 932, the whole northeast fell. Since then, the Japanese puppet Manchukuo regime was established in the northeast of China, and began to enslave and colonize the people in the northeast for 14 years, making more than 30 million compatriots in the northeast suffer from conquered people. ?