Sun Yubao, 91, a veteran of the anti-Japanese war, talks about his own war experiences as students from local primary school listen in an interactive session during a mourning ceremony held in War Martyrs' Cemetery in Nangong City of north China's Hebei Province, Aug. 15, 2017. China is commemorating the 72nd anniversary of Japan's unconditional surrender in World War II Tuesday. (Xinhua/Mou Yu)
