File photo shows Hisao Tani, the lieutenant general of sixth division of the Japanese army in Nanjing during the Nanjing Massacre, being tried by the Nanjing War Crimes Tribunal. Chinese lawmakers are mulling making December 13 a national memorial day to commemorate those killed by Japanese aggressors during the Nanjing Massacre. The draft decision will be discussed at the bi-monthly session of the Standing Committee of the National People's Congress (NPC) which runs from Tuesday through Thursday. Japanese troops started the massacre in Nanjing on Dec. 13, 1937, killing more than 300,000 people in the following 40-odd days. [Xinhua]