Aerial photo taken on March 28, 2022 shows farmers working in a rice paddy field in Longfu Village, Longfu Township of Liuyang City, central China's Hunan Province. (Xinhua/Peng Hongxia)

Aerial photo taken on March 28, 2022 shows farmers working in the fields in Xinghuliu Village, Jiazhai Township of Liaocheng City, east China's Shandong Province. (Xinhua/Zhao Yuguo)

Aerial photo taken on March 28, 2022 shows farmers working in rice paddy fields in Zhangwufang Village, Baimadu Township, Daoxian County of Yongzhou City, central China's Hunan Province. (Xinhua/He Hongfu)

Aerial photo taken on March 28, 2022 shows farmers working in the fields in Shiban Village, Rongxi Township, Xiushan Tujia and Miao Autonomous County of Chongqing, southwest China. (Xinhua/Hu Cheng)

Aerial photo taken on March 28, 2022 shows a farmer working in the field in Sanjiao Village, Banxi Township, Youyang Tujia and Miao Autonomous County of Chongqing, southwest China. (Xinhua/Ran Chuan)

Farmers work in a rice paddy field in Longshan Village, Xiushi Township, Fengcheng City of east China's Jiangxi Province, March 28, 2022. (Xinhua/Zhou Liang)

A farmer works in the field in Liaojunbu Village, Yuezhuang Township, Yiyuan County of Zibo City, east China's Shandong Province, March 28, 2022. (Xinhua/Zhao Dongshan)

A farmer works in the field in Changping Village, Moudao Township of Lichuan City, Enshi Tujia and Miao Autonomous Prefecture, central China's Hubei Province, March 28, 2022. (Xinhua/Wen Lin)

Farmers work in the field in Taohuayu Village, Yuezhuang Township, Yiyuan County of Zibo City, east China's Shandong Province, March 28, 2022. (Xinhua/Zhao Dongshan)

A farmer works in the field in Wangfen Village, Xiangyun Township, Wenxian County of Jiaozuo City, central China's Henan Province, March 28, 2022. (Xinhua/Xu Hongxing)

Aerial photo taken on March 28, 2022 shows farmers working in the field in Changping Village, Moudao Township of Lichuan City, Enshi Tujia and Miao Autonomous Prefecture, central China's Hubei Province. (Xinhua/Wen Lin)

Farmers spray pesticide in the field in Gengzhang Village, Jiazhai Township of Liaocheng City, east China's Shandong Province, March 27, 2022. (Xinhua/Zhao Yuguo)