China urges Japan to safeguard world peace and remember history, Yu Zhengsheng, chairman of the Chinese People's Political Consultative Conference (CPPCC), said on Wednesday, as the country remembered the victims killed by Japanese troops during the World War II. Yu made the remarks at a state memorial ceremony to mark the 80th anniversary of the Nanjing Massacre in the city of Nanjing, east China's Jiangsu Province.