Japan launched the July 7th Incident on the pretext that a soldier was missing. Explain that the Japanese army deliberately launched an attack.

In order to occupy China, Japanese imperialism launched a long-planned full-scale war of aggression against China. 1On the night of July 7, 937, the Japanese army searched in wanping county, southwest of Beiping (now Beijing), under the pretext of lack of soldiers. Defenders in China rejected this unreasonable demand. The Japanese opened fire and stormed the Lugou Bridge, attacking the defenders of China in the city. China Garrison 29th Military Discipline Xingwen Group fought back. It started the national War of Resistance against Japanese Aggression.

As early as the Meiji Restoration, while establishing the modern Mikado system, Japan quickly embarked on the path of militarism and formulated a "mainland policy" with China and North Korea as the main targets. At the beginning of the 20th century, after the Russo-Japanese War, Japan replaced Russia, expanded its colonial power in the northeast of China, stationed the Kwantung Army, established the colonial organization "Nanman Railway Company", and used the northeast as the base for colonial expansion in China.