People pay tributes to martyrs at a monument of a memorial hall for the Chinese People's War of Resistance against Japanese Aggression in western Yunnan, in Tengchong, southwest China's Yunnan Province, Dec. 13, 2025. The 12th national memorial day was observed on Saturday across the country to honor about 300,000 victims killed by Japanese troops during the Nanjing Massacre, in a year that marks the 80th anniversary of the end of World War II (WWII). (Photo by Gong Zujin/Xinhua)