A photo taken on July 29, 2015 shows children play around an airplane model in the Second World War at the Flying Tigers Memorial in Hunan province. The Flying Tigers memorial, built near Zhijiang Airport in central China's Hunan province in May 2005, consists of the memorial, the site of the air force command tower and the site of Sino-U.S. Joint Air Force Club. War planes belonging to the tigers along with objects used by soldiers, photos and documents are on display at the memorial. [Photo: Xinhua]