Solemn ceremony honors wartime victims in Nanjing

Lu Zhaoning, a Chinese American collector, donated historical materials related to the massacre to the memorial hall. As one of the strikers of the Bell of Peace this year, he said the sounds stood for a remembrance of the past, cherishing peace and ensuring that history will never repeat itself.

"History is getting further away from us with each passing day," Lu said. "I will continue to collect historical materials related to the Nanjing Massacre. We will have regrets if we don't explore and preserve them now."