Philatelic items issued to mark PLA Navy's founding anniversary

67-year-old Dai Chunguang displays a commemorative envelope at a shop in Qingdao, east China's Shandong Province, April 23, 2019. A set of philatelic items were issued on Tuesday to mark the 70th founding anniversary of the Chinese People's Liberation Army (PLA) Navy. (Xinhua/Zhu Zheng)