During World War II, the Japanese army invaded several provinces in China. These acts of aggression caused enormous destruction and human beings are painful memories in the history of China and Japan. The following is a list of the Chinese provinces invaded by the Japanese army, as well as the related historical events and backgrounds:
Northeast china. 
In 1931, he launched the 918 Incident, announcing the occupation of three northeastern provinces of China and the establishment of the puppet state of Manchukuo. This action marked the beginning of Japan's full-scale aggression against China and also opened the prelude to China's War of Resistance Against Japan.
Hebei Province. 
Hebei Province was also invaded by the Japanese army during the War of Resistance Against Japanese Aggression. The Japanese army occupied many cities and regions in Hebei Province and brutally plundered and ruled the local population.
Shandong Province. 
The Japanese invasion of Shandong Province began with the Lugou Bridge Incident in 1937, and then began to carry out battles such as the Battle of Jinan. The Japanese army carried out a long period of occupation and brutal rule in Shandong Province, which brought great suffering to the local people.
Jiangsu Province. 
During the War of Resistance Against Japanese Aggression, Jiangsu Province also became the object of Japanese aggression. The Japanese army carried out a long period of occupation and brutal rule in Jiangsu Province, which brought great suffering and disasters to the local people.
Guangdong Province. 
As a southern province of China, Guangdong Province was not spared from Japanese aggression. During the War of Resistance Against Japanese Aggression, the Japanese army occupied parts of Guangdong Province, bringing long-term suffering and suffering to the local people.
The provinces listed above are only the tip of the iceberg of Japanese aggression. These acts of aggression have brought great suffering and harm to the Chinese people, and have also inspired the Chinese people to resolutely resist and resist the Japanese invaders. Hopefully, this information will be helpful to your historical research.
It is worth noting that the above content is compiled based on reliable historical data, mainly referring to authoritative publications such as "History of China's War of Resistance Against Japanese Aggression" and "Anti-Japanese War Data Series" to ensure the accuracy and credibility of the content.