Why didn't Japan admit the crimes committed in China?

As we all know, the Japanese invaded China in the war of aggression against China and committed heinous crimes in China. This is irrefutable evidence, which is known to all people in China. However, under such irrefutable evidence, they still argue that there is no such thing. I think there is a reason for this. Personally, I think it should be like this. There are many anti-Japanese movies and TV dramas in China, but some of them are true and some are false. I am extremely excluded, such as "Wolf Poison Flower", "Ten Days of Life and Death" and "The Mystery of the Storm". And the worst of them is ten days of life and death. Why do you say that? Because the Japanese in his heart can't speak Japanese, and his standard Mandarin is even more standard than that of China. He doesn't look like China, he just dresses differently. This is the same as reality. A man was in prison for stealing, and he never stole again after he came out, but people wronged him and said he stole, not one or two, but three or four, or even five, six, seven and eight. Of course he won't admit it, and personally, I think it is these fake TV dramas and fake, fabricated and anti-Japanese movies that have led to today's results. All TV stations should ban these fakes forever and keep their history clean.