Photo taken on Dec. 18, 2018 shows a view of Hani terraced fields in Yuanyang County, southwest China's Yunnan Province. Local people of the Hani ethnic group have a history of more than 1,000 years of terracing the ridges for high-yield cropping. The United Nations Educational, Scientific and Cultural Organization listed the Hani terraced fields as a world heritage in 2013. (Xinhua/Lin Yiguang)