The Japanese Kwantung Army stationed in the northeast of China suddenly attacked Shenyang and occupied the northeast by force. /kloc-from the end of 0/9 to the first half of the 20th century, Japan gradually decided to conquer China and Manchuria before conquering China. 1930, the world capitalist economic crisis spread to Japan. In order to transfer the increasingly fierce domestic class contradictions, the Japanese accelerated the pace of military aggression against China, and in July and August of 193 1, the Wanbaoshan Incident and the Nakamura Incident were created in the northeast of China.
From 1995, Shenyang began to commemorate the "September 18th Incident" by ringing the police, which has been held continuously for 17 years. Since 2006, Liaoning Province 14 cities have sounded the alarm at the same time. On this day every year, a large number of Shenyang citizens spontaneously come to the "September 18th" History Museum to participate in activities.