A staff member measures the area of a plot of field at a demonstration base in Hengnan County of Hengyang City, central China's Hunan Province, Oct. 21, 2019. The third-generation hybrid rice developed by Yuan Longping, the "father of hybrid rice," and his team underwent its first public yield monitoring from Monday to Tuesday and achieved high output. The final yield of the tested variety, G3-1S/P19, came to 1,046.3 kg per mu (about 667 square meters), based on two plots of land in Qingzhu Village under the city of Hengyang in Hunan. (Xinhua/Chen Zeguo)