People of the Dong ethnic group sing Dong-style songs accompanied by Niutuiqin, a kind of traditional string instrument used by Dong people, during a Dong song festival held at Dingda Village of the Dong ethnic group in Rongjiang County, southwest China's Guizhou Province, on Nov. 11, 2018. Over 600 folk singers of the Dong ethnic group gather at the village to celebrate a Dong song festival. (Xinhua/Shi Qingwei)