Aerial photo taken on April 19, 2019 shows people of Miao ethnic group attending a singing event to celebrate the Miao Sisters Festival in Taijiang County, Qiandongnan Miao and Dong Autonomous Prefecture, southwest China's Guizhou Province. Miao Sisters Festival is enlisted in the first batch of national intangible cultural heritages in 2006. (Xinhua/Ouyang Guanglin)