File photo taken on Sep. 9, 1945 shows He Yingqin (L), representative of the Chinese government, receiving the surrender of Japan in Nanjing. 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]