Farmers work in Nantuanting Village of Santunying Town of Qianxi County in Tangshan City, north China's Hebei Province, June 14, 2019. (Xinhua/Wang Aijun)

Farmers work in a flower field in Laochang Village of Maoping Town in Longshan County of Xiangxi Tujia and Miao Autonomous Prefecture, central China's Hunan Province, June 14, 2019. (Xinhua/Zeng Xianghui)

Aerial photo taken on June 14, 2019 shows villagers loading baled straw in Xintun Village of Tancheng County in Linyi City, east China's Shandong Province. (Xinhua/Zhang Chunlei)

Farmers work in a flower field in Laochang Village of Maoping Town in Longshan County of Xiangxi Tujia and Miao Autonomous Prefecture, central China's Hunan Province, June 14, 2019. (Xinhua/Zeng Xianghui)

Farmers harvest potatoes in Shuanghu Village of Jinsuo Town in Sihong County of Suqian City, east China's Jiangsu Province, June 14, 2019. (Xinhua/Zhang Lianhua)