National Memorial Day, set up by the state, is meant to commemorate the significant national catastrophe. After World War II, the major belligerent states have successively put forward the day of mourning at a national level, in the form of a public memorial ceremony, to remember the citizens who have lost their lives in the massacre and intensify the conscience of neoteric people about the pains and sorrows that their countries have suffered during the war, up to now, which has become an international observance. So far, there are numerous examples existing across the world , such as The Holocaust Memorial Hall at Auschwitz, Poland, The Pearl Harbor Memorial Museum in the United States, The Memorial Hall in honor of The Soviet Union's Great Patriotic War against Nazi Germany in Russia, The Memorial Hall in Hiroshima and Nagasaki, Japan and so forth, where a rite will be held annually. China observes its National Memorial Day for Nanjing Massacre Victims on 13th December, and the commemorative service has gained worldwide media attention. Today, Chinese residents, survivors and government leaders attend the ceremony to remember the dead for China's third official National Day of Remembrance of the massacre.