Photo taken on December 10, 2023 shows the messages on a wishing wall at a subway station in Nanjing. Ahead of the national memorial ceremony for the Nanjing Massacre victims, several subway stations in the city have set up wishing walls, allowing people to leave their messages of peace. The ceremony will be held on Wednesday in Nanjing to commemorate the 86th anniversary of the massacre and to mourn the victims. (CFP Photo)

Photo taken on December 10, 2023 shows the messages on a wishing wall at a subway station in Nanjing. Ahead of the national memorial ceremony for the Nanjing Massacre victims, several subway stations in the city have set up wishing walls, allowing people to leave their messages of peace. (CFP Photo)

Photo taken on December 10, 2023 shows the messages on a wishing wall at a subway station in Nanjing. Ahead of the national memorial ceremony for the Nanjing Massacre victims, several subway stations in the city have set up wishing walls, allowing people to leave their messages of peace. (CFP Photo)

Photo taken on December 10, 2023 shows the messages on a wishing wall at a subway station in Nanjing. Ahead of the national memorial ceremony for the Nanjing Massacre victims, several subway stations in the city have set up wishing walls, allowing people to leave their messages of peace. (CFP Photo)

Photo taken on December 10, 2023 shows the messages on a wishing wall at a subway station in Nanjing. Ahead of the national memorial ceremony for the Nanjing Massacre victims, several subway stations in the city have set up wishing walls, allowing people to leave their messages of peace. (CFP Photo)