Hey Sabrina, i am back from leave. I noticed that you asked a very interesting question.
Only recently i was reading about Unit 731 and their activities at Pingfang district. It is then i came across references to related movies such as "The flowers of war"
It stars "Christian Bale" a very popular contemporary method actor.
I will see the movie soon and let you know, i just hope that it does not contain horrific scenes of what can only be described as "hell on earth". I just don't have the stomach.
Is Pingfang close to Qiqihar, do your parents or relatives have any experiences, i would like to know. Speak to you soon.