This photo shows one of the investigation reports written by David Nelson Sutton, a U.S. assistant prosecutor during the Tokyo Trials.

This year marks the 80th anniversary of the beginning of the work of the International Military Tribunal for the Far East (IMTFE), also known as the Tokyo Trials. New evidences of Japanese invasion crimes have been made public recently.

Diaries and investigation reports of a U.S. assistant prosecutor during the Tokyo Trials were donated to the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders by a Chinese collector.

Back to the 1946, David Nelson Sutton, an assistant prosecutor during the Tokyo Trials, came to China to investigate the war crimes committed by the Japanese troops in China. For nearly three years after that, Sutton wrote down the details of his investigations, witness statements, and court sightings in his diary.

Meanwhile, Sutton also wrote a series of "Reports from China", covering key historical facts such as the atrocities of the Nanjing Massacre, Japan's germ-warfare crimes in China and Japan's economic aggression against China.

After 80 years, these long-buried judicial historical materials have come to light once again. These private records and narrations beyond the official trial documents are filled with Sutton's shock at the atrocities committed by the Japanese invaders during their invasion of China and his profound reflection on the war.

Those details that have been sealed away by time, with their undeniable historical facts, refute the distortions and oblivion, constantly reminding the world to remember the war crimes and safeguard the truth of history.

This photo shows some belongings of David Nelson Sutton, a U.S. assistant prosecutor during the Tokyo Trials.

This photo shows the diaries written by David Nelson Sutton, a U.S. assistant prosecutor during the Tokyo Trials.