Aerial photo taken on July 30, 2019 shows a view of the Ningxiang subordinated storehouse of China's state grain stockpiler Sinograin in Ningxiang, central China's Hunan Province, July 30, 2019. The sampling inspection is applied to ensure the quality of the grain being stored, followed by a series of advanced technologies used to keep the grain from deterioration. (Xinhua/Xue Yuge)