A teacher guides students in Pipa (4-stringed Chinese lute) singing of the Dong ethnic group at Leli Middle School in Rongjiang County of Qiandongnan Miao and Dong Autonomous Prefecture, southwest China's Guizhou Province, June 19, 2019. Over years, various activities of ethnic groups have been launched in Rongjiang County, so that students can learn in an environment with diversified cultures and inherit ethnic cultures. (Xinhua/Yang Wenshu)