People visit WWII photo exhibition on China-US collaboration in California (3/4)

Christopher Nixon Cox (1st L), grandson of former US President Richard Nixon, and Li Xiaolin (2nd L), president of the Chinese People's Association for Friendship with Foreign Countries, visit the photo exhibition "Salute to Friendship - Images Narrate China-US Collaboration During World War II" at the Nixon Library in Yorba Linda City of California, the United States, July 23, 2014. The photos were taken by soldiers of the US Army Signal Corps in China during WWII. (Xinhua/Zhang Chaoqun)