What happened on September 18? Ask for a detailed explanation!

1931September 18, the Japanese Kwantung Army stationed in the northeast of China suddenly attacked Shenyang and attacked the northeast by force. /kloc-In September of 0/8, the Japanese created the "Wicker Lake Incident" and launched a war against the Wicker Lake Incident in northeast China. At about 10 that night, Kawamoto, the captain of Chuan Dao Squadron of Shimamoto Brigade of Japanese Kwantung Army, led several people to blow up a section of the track of Nanman Railway near Liutiao Lake, about 800 meters south of Shenyang Beidaying, saying that China troops destroyed the railway. The Second Brigade of the Japanese Independent Guard launched an attack on Peking University Camp, where the Northeast Army stationed in China. At 4 o'clock the next morning, the fifth brigade of the Japanese Independent Guard arrived at Peking University Camp from Tieling to participate in the war. At 5: 30, the Seventh Brigade of the Northeast Army retreated to Dongshanzuizi, Shenyang, and the Japanese army occupied Beidaying. In the battle, the Northeast Army suffered more than 300 casualties and the Japanese army suffered 24 casualties. This is the September 18th Incident that shocked China and foreign countries. September 18th Incident (also known as Shenyang Incident; Japan called Manchuria Incident because the northeast of China was called Manchuria by Japan) refers to a military conflict and political event that broke out in the northeast of China on September 193 18. The two sides of the conflict are the Northeast Army of China and the Japanese Kwantung Army. After the September 18th Incident broke out, the contradiction between Japan and China further intensified, and the position of the Japanese headquarters as the main battle in Japan rose, which led Japan to embark on the road of full-scale aggression against China. Within a few years after this incident broke out, all the three northeastern provinces were occupied by the Japanese Kwantung Army, so they were regarded as national humiliation by the people of China. Until today, 18 September is called "national shame day" in many informal occasions in China.

Therefore, Northeasters have always believed that the Anti-Japanese War began at 193 1, that is, 14.