Aerial photo taken on Oct. 21, 2020 shows a starch factory buying potatoes from farmers in Malian Township of Xiji County, Guyuan, northwest China's Ningxia Hui Autonomous Region. An estimated 1.6 million tonnes of potatoes will be harvested this year from crop fields covering about 53,333 hectares in Xiji County. (Xinhua/Wang Peng)
