China News Agency, Nanjing, December 13th, title: Eighty-five years of black and white festival: the world is in sorrow and the world is praying for peace China News Agency reporter Zhu Xiaoying Shen Ran In the early morning of December 13th, it was cold. In the large assembly square of the Memorial Hall of the Victims in the Nanjing Massacre by Japanese Invaders, the national flag flew at