I visited Hiroshima last October and took in the sights.
The city is beautiful, and the museum was modern. It leaned heavily on pity for the children that died in the bombing and the aftermath. No mention anywhere about the kids in China.
The Japs fooled around, and they found out. We didn't bomb Hiroshima and Nagasaki in a moral or social vacuum. They started a war (in China long before they bombed Pearl) and prosecuted it most brutally. The atomic bombings were an appropriate response.
The first is "56". Because that is the number of Chinese Prisoners of War that were alive after Japan surrendered. The Japanese took millions of Chinese POWs but only 56 lived.
But what happened to the rest?
Unit 731.
That is the other number. The records are there. If you care to look. Suggest only having a banana before researching. Why? Because when you throw up it does not burn as badly. And if you go deep enough, you will throw up.
The Empire of Japan was a horror show that went on for 50 years.
Stopping it was a Good Thing.