The staff of the Nanjing Museum of the Site of Lijixiang Comfort Stations,  a branch of the Nanjing Massacre Memorial Museum, traveled on May 8th and 9th to  Yueyang city of central China’s Hunan Province where they confirmed the identity  of five newly-discovered victims of the Japanese military sexual slavery system  during WWII. They are 95-year-old Grandma Ling and Grandma Yu, 102-year-old  Grandma Liu, 99-year-old Grandma Yang, and 92-year-old Grandma Wu. The latest  discovery increased the number of surviving Chinese victims to Japan's wartime  sex slavery to 18 in the Chinese mainland.