On the 26th, a press conference was held in Nagano Prefecture by Yingnan Shimizu, a Unit 731 soldier of the Japanese invaders. After 79 years, he went back to the Unit 731, the hellish experience resurfaced: “I deeply regret having been subjected to human experimentation, but the person who can forgive me is gone,” he said repeatedly, it is hoped that the Japanese government can face up to the history of aggression, so that today’s Japanese society and the next generation to realize the truth of the history down low