Aerial photo taken on May 29, 2019 shows farmers harvesting wheat in Daluli Village of Wuyang County, central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on May 29, 2019 shows farmers harvesting wheat in Daluli Village of Wuyang County, central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on May 29, 2019 shows farmers harvesting wheat in Daluli Village of Wuyang County, central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on May 29, 2019 shows farmers harvesting wheat in Daluli Village of Wuyang County, central China's Henan Province. (Xinhua/Li An)

Aerial photo taken on May 29, 2019 shows farmers harvesting wheat in Daluli Village of Wuyang County, central China's Henan Province. (Xinhua/Li An)

A farmer collects wheat in a harvested field in Shilipu Village of Wuyang County, central China's Henan Province, May 29, 2019. (Xinhua/Li An)

A farmer operates a machine to harvest wheat in Shilipu Village of Wuyang County, central China's Henan Province, May 29, 2019. (Xinhua/Li An)