In the library. Before the Nanjing Massacre, the Japanese army carried out a series of activities to kill civilians in Shanghai, Suzhou, Jiaxing, Hangzhou, Shaoxing, Wuxi and Changzhou. Therefore, some Japanese historians once suspected that the 300,000 civilians killed by China actually included the population of East China killed outside Nanjing. However, China historians retort that if the number of people killed in East China is included, the total number may be as high as one million.

3) In addition to the Nanjing Massacre, the Japanese army also carried out many large or small massacres in other parts of China. Many counties and cities in China have records of being massacred by Japanese troops during World War II. The famous one is Fushun pingdingshan massacre.

4) The Japanese policy of "Three Lights" in northern China is actually a policy of population extinction for farmers in some areas of China.

Japanese bombing of Chongqing, the capital of China.

After the government of the Republic of China moved westward to Chongqing, the capital of the Republic of China, relying on Chongqing's natural barrier advantage, it constantly counterattacked the Japanese army. However, because Chongqing was often locked by dense fog, the Japanese army could not effectively counterattack the attack of the National Government. Therefore, the Japanese army chose to carry out intensive bombing in Chongqing with the intention of leveling the mountain city. But as a result, Chongqing is still impregnable, except that many houses were bombed and many innocent citizens were killed because they could not escape. It is reported that about 30 thousand Chongqing residents died in the bombing.