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6830 pairs of cloth shoes have been laid out in a Nanjing memorial hall in east China's Jiangsu province. It's to remember the 6830 Chinese people killed during World War Two who were forced to work as laborers in Japan.
Every pair of shoes represents a Chinese laborer killed in Japan's labor camps during World War Two.
Behind every death - a family, friends, loved ones - all are still broken hearted six decades later.
Ms. Liu, daughter of killed laborer, said, "It's for the memory of the predecessor. They didn't even have a pair of shoes to wear while they were working in Japan. We bring shoes for them today, we want them to know that we haven't forgotten them, we don't forget the history. It's a comfort for them."
Ms. Liu, who's from Shijiazhuang in north China's Hebei Province came to Nanjing for Sunday's memorial services. Her father was a laborer killed in Japan. She sobs as she tells his story.
She says her father had to do high-intensity work everyday and was treated like an animal. She says he was forced to carry sandbags through freezing cold water with no shoes. Many Chinese laborers' toes froze and came off their feet.
During the war, Japan didn't just plunder resources from overseas, it also pillaged Chinese military soldiers and innocent civilians to Japan to work. The laborers weren't paid for their work. Many who did escape alive or make it home safely were disabled for life.