Mo Qingshun, the son of a dead Chinese forced laborer in Japan during World War II (WWII), cries during the memorial service of the dead Chinese forced laborers in a park in Tokyo, Aug. 9, 2009. (Xinhua/Ren Zhenglai)

Song Mingyuan of east China's Shandong province, 64, cries during the memorial service of the dead Chinese forced laborers in a park in Tokyo, Aug. 9, 2009. Song is one of the survivors of forced Chinese laborers in Japan during World War II (WWII).(Xinhua/Ren Zhenglai)