From 220,000 to just 22, few former Chinese “comfort women” are still alive to tell their stories of being forced into sex slavery by the Japanese army during World War Two. All were subjected to horrific sexual assault. Decades passed, and most of the victims left the world without receiving an apology from the Japanese government. Estimates put the number of the victims across Asia at over 300,000, with women from countries like Japan, Korea (before division), Vietnam and China. In 2014, there were only 22 survivors alive in China. Film director Guo Ke decided to document their lives before it was too late. The name of his documentary? "Twenty Two."  Take a look at the exclusive interview of director Guo Ke with CGTN to find out what touched him the most when interviewing "comfort women."