For many years, it has been an annual routine for Ai Yiying to mourn her lost relatives at the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders.

Ai Yiying was a little girl when the Nanjing city was invaded by Japanese army in December 1937. Ai's father, uncles and cousins were taken away from their home and killed by the Japanese soldiers. The rest of the family had to hide to avoid the raping and killing.

Her family was not the only victims. As many as 300,000 Chinese civilians and unarmed soldiers were killed during the six-week massacre after Japanese troops captured Nanjing on Dec 13, 1937.

"History should not be forgotten. My greatest wish is for more people to learn the truth about the Nanjing Massacre," said Ai.

Ai has been to Japan to attend testimony meetings to share her memory of the massacre in 2014. And her son, Huang Xinghua, was recognized as an inheritor of historical memories regarding the Nanjing Massacre to pass on the baton of telling the truth about the massacre.