A farmer dries harvested walnuts in Shiqiaotou Village, Zunhua City, north China's Hebei Province, Sept. 7, 2018. (Xinhua/Liu Mancang)

Farmers strip walnuts skins in Shiqiaotou Village, Zunhua City, north China's Hebei Province, Sept. 7, 2018. (Xinhua/Liu Mancang)

A farmer harvests garlic chives flowers in Jiazhai Township of Chiping County of Liaocheng City, east China's Shandong Province, Sept. 5, 2018. (Xinhua/Zhao Yuguo)

Farmers pick tea leaves at a base in Zhangjiajie, central China's Hunan Province, Sept. 5, 2018. Tea fields here have entered autumn harvest season recently. (Xinhua/Wu Yongbing)

A farmer harvests highland barley in the fields at Kaduo Village in Linzhou County, southwest China's Tibet Autonomous Region, Sept. 3, 2018. (Xinhua/Purbu Zhaxi)

A farmer harvests highland barley in the fields at Kaduo Village in Linzhou County, southwest China's Tibet Autonomous Region, Sept. 3, 2018. (Xinhua/Purbu Zhaxi)

A farmer harvests highland barley in the fields at Kaduo Village in Linzhou County, southwest China's Tibet Autonomous Region, Sept. 3, 2018. (Xinhua/Purbu Zhaxi)

Aerial photo taken on Sept. 3, 2018 shows farmers drying rice in Aizhai Town of Jishou City, central China's Hunan Province. (Xinhua/Qu Mingbin)

A villager dries chilies in the sun at his yard in Shanghu Village of Santanghu Town in Kazak Autonomous County of Barkol, northwest China's Xinjiang Uygur Autonomous Region, Aug. 31, 2018. (Xinhua/Dawut Rishat)

A farmer dries corn in the sun in Matou Town of Tancheng County in Linyi, east China's Shandong Province, Aug. 30, 2018. (Xinhua/Fang Dehua)