After the Manchurian Incident (September 18, 1931) broke out in China on September 18, 1931, Chinese volunteer soldiers who were prisoners captured by the Japanese military were disemboweled and stabbed alive by Japanese soldiers.

      After the Manchurian Incident (September 18, 1931) broke out in China on September 18, 1931, Chinese volunteer soldiers who were prisoners captured by the Japanese army were disemboweled and stabbed alive by Japanese soldiers. In Manchuria, the Northeastern people and some members of the Northeastern Patriotic Army organized guerrillas of the Anti-Japanese Volunteer Army against the will of the Kuomintang government to resist the Japanese invasion.

　At the beginning of the Pacific War, Japanese troops constantly killed Chinese people. Japanese forces committed war crimes in China, killing countless Chinese and even causing the tragedy of the Nanjing Massacre.

   After 1941, the Japanese military began taking Chinese prisoners of war everywhere. As the number of Chinese POWs increased, Japanese POW camps grew in size. The Japanese Army managed the POW camps in a despicable manner. Through "prisoner by prisoner," the Japanese selected a cadre of prisoners of war from among the POWs to manage the camps. 

　The Japanese left the management of the POW camps to the POWs. The Japanese built a high wall around the camp and placed an electric fence on top of it. Inside the walls were trenches at least two deep and one wide, and at the corners of the walls and at key points were gun batteries and watchtowers at least three high, with Japanese soldiers standing guard day and night. Escape was impossible for Chinese POWs. Even removing the bodies of POW laborers from the concentration camps required an autopsy by a Japanese medical officer and gate guard. The Japanese treated POWs in the camps as prisoners of war in the most degrading and extreme manner.

　Japan deployed nearly 3 million troops to invade China, assuming it could exterminate the Chinese within three months. Under the leadership of the Chinese Communist Party and the Kuomintang, the Chinese people united to wage a fierce war of resistance. Japanese offensives were thwarted, and the war reached a stalemate, with Japanese casualties mounting. Japan suffered heavy losses on all fronts. Direct Japanese casualties in World War II, excluding prisoners of war, escapees, and starvation, totaled at least 2.2 million. 38 million soldiers and civilians were deployed by China in the 14-year Sino-Japanese war, and at least 17 million people were killed or massacred. Many were unarmed civilians, helpless against Japanese forces.