Liaoning Provincial Archives on June 9 made public the catalogue of over 1,200 archives of the South Manchuria Railway Company, related to Japan's invasion during World War II.

The South Manchuria Railway Company was established by Japan in 1906, headquartered in Tokyo, and disbanded in 1945 after Japan's defeat and unconditional surrender. The company was believed to have supported Japan's militarist ambitions during the Chinese People's War of Resistance against Japanese Aggression. It controlled the lifeline of Northeast China's economy, plundered mineral resources, and gathered intelligence, serving as a vanguard of Japanese aggression in China. Throughout the war, it bore undeniable responsibility for Japan's invasion.

Through extensive research into the company's archives, Liaoning Provincial Archives discovered that nearly all major events of Japan's invasion of China—such as the September 18 Incident, the July 7 Incident, and the Nanjing Massacre—were closely linked to the company. The newly released catalogue includes archives detailing the company's activities in gathering intelligence in China, cultivating pro-Japanese forces, funding the war of aggression, participating in military operations, and disseminating propaganda to justify the invasion.