From another website, “Potatso National Park, also known as Pudacuo National Park, opened in 2007 and is China’s first national park to be approved by the International Union for Conservation of Nature. The park is famous for its primitive landscape and features several scenic hills, meadows, and lakes.”  Strangely, Wikipedia contradicts this:  “Potatson National Park (普达措国家公园) is a provincially-administered natural reserve in Shangri-la … covering 500-square-miles.  Despite the name, it is a national park trial site and is not part of the national park system of China.  The park was announced on June 25, 2007, and is notable as the first natural reserve park in China to meet International Union for Conservation of Nature standards. It incorporates the Bita Lake Nature Reserve and the Duhu Scenic Area.”  So we don’t know, but these four unusually shaped approx. 4″ x 8-3/4″ cards (two are in our scan) were issued by China Post in 2009, have pre-printed coloured 80 fen postage, QR codes, and extensive Chinese text that calls this a national park as well as a World Heritage site (another website says “This park is a part of the UNESCO designated World Heritage Site of the Three Parallel Rivers of Yunnan Protected Area.”  That’s all!  Unused.  Grade: 1