Introduction to the Kwantung Army: Since its establishment, the Kwantung Army has successively planned and created the Zhengjiatun incident, intervention in the Guo Songling defection incident, Jinan massacre, Huanggutun incident, Wanbaoshan incident, Captain Nakamura incident, and Liutiao Lake incident in our country , concocting the puppet Manchukuo and a series of major events. In order to adapt to the continuous expansion of the military, the Kwantung Army prepared frantically for war, built military projects and related factories and facilities, and forcibly captured people from Northeast China, Hebei, Shandong and other places to work as laborers, creating many "mass graves".