Visitors look at items featuring the Flying Tigers at a post office in Southwest China’s Chongqing municipality, July 7, 2015. Liu Guangzhi, who was born in Chongqing and fought Japanese troops during the Second World War, has donated over 130 Flying Tigers-themed items to the museum, including stamps and postcards. Liu now lives in Taiwan. The Flying Tigers, also known as the 1st American Volunteer Group, were a group of American and Chinese pilots fighting together against invading Japanese troops during the Second World War. (Photo: China News Service/Zhou Yi)
