Sixty-nine-year-old Japanese artist Kazuko Yokoi knows the atrocity in Nanjing in 1937 from the victims and her own family.
She is now bringing a one-woman show on stage called The Eyes Hold the Truth.
"I was sent out to work when I was 14. One day, a Japanese police officer came in and said 'I know a good job that can make you a lot of money. Do you want to come?' I was 17 back then. I saw at least 10 girls like me waiting at the train station. The man took us to Pyongyang, left us to a military policeman and left. We were tricked! By the time we knew,it was already too late. 'We will kill you if you run!' the man shouted. We got off the train at Pukou Statio