Tibetans throw prayer papers on horseback as they gather for a traditional festival called "Wei Sang", in Hongyuan county of Aba Tibetan and Qiang autonomous prefecture, Southwest China's Sichuan province, Jun 18, 2014. The festival is usually held in May or June, when Tibetans burn tree branches to create smoke and throw prayer papers to wish for good fortune and a better pasture season. [Photo by He Haiyang/Asianesphoto]