File photo taken on Aug. 28, 2014 shows Sun Yuanxin, who is a surviving forced miner working for Japan during the World War II, looking at the remains of forced miners at a museum of Liaoyuan miners' tomb during Japanese occupation in Liaoyuan, northeast China's Jilin Province. Japan invaded northeast China in 1931 and conducted a full-scale invasion in 1937. By the end of World War II, millions of Chinese forced laborers had been enslaved by Japanese invaders to toil under harsh conditions at mines and factories in northeast China and Japan. Those laborers were under close watch and suffered inhumane treatment. Many of them died from malnutrition, illness, physical abuse and plain murder. (Xinhua/Wang Haofei)
