In this aerial photo taken on April 20, 2019, farmers work in a field in Chebei Village of Baogai Township, Hengnan County, Hengyang, central China's Hunan Province. Guyu, literally meaning "Rain of Millet", is the sixth of the 24 solar terms created by ancient Chinese to carry out agricultural activities. For the year 2019, the day of Guyu falls on April 20. (Xinhua/Cao Zhengping)