Aerial photo taken on Sept. 20, 2019 shows harvesters cropping alfalfa in Ar Horqin Banner of north China's Inner Mongolia Autonomous Region. Local authorities brought in investment to develop the alfalfa planting industry in 2011, which helped to prevent the land from changing into desert. So far, the planting area of alfalfa has reached over 46,666 hectares in this banner. (Photo: Xinhua)

Aerial photo taken on Sept. 20, 2019 shows harvesters cropping alfalfa in Ar Horqin Banner of north China's Inner Mongolia Autonomous Region. Local authorities brought in investment to develop the alfalfa planting industry in 2011, which helped to prevent the land from changing into desert. So far, the planting area of alfalfa has reached over 46,666 hectares in this banner. (Photo: Xinhua)

Aerial photo taken on Sept. 20, 2019 shows harvesters cropping alfalfa in Ar Horqin Banner of north China's Inner Mongolia Autonomous Region. Local authorities brought in investment to develop the alfalfa planting industry in 2011, which helped to prevent the land from changing into desert. So far, the planting area of alfalfa has reached over 46,666 hectares in this banner. (Photo: Xinhua)

Villagers harvest water chestnuts in Feijiadai Village, Linghu Town of Huzhou, central China's Zhejiang Province, Sept. 21, 2019. (Photo: Xinhua)

Harvested water chestnuts are seen in Feijiadai Village, Linghu Town of Huzhou, central China's Zhejiang Province, Sept. 21, 2019. (Photo: Xinhua)

People participate in an event to celebrate the harvest season in Tangqi Town of Hangzhou, capital of east China's Zhejiang Province, Sept. 19, 2019. An event to celebrate the harvest season was held on Thursday, in which people parade by boat with agricultural products. (Photo: Xinhua)

Aerial photo taken on Sept. 19, 2019 shows people parading by boat to celebrate the harvest season in Tangqi Town of Hangzhou, capital of east China's Zhejiang Province. An event to celebrate the harvest season was held on Thursday, in which people parade by boat with agricultural products. (Photo: Xinhua)

Artists perform shoulder pole dance to celebrate the harvest during an activity in Du'an Yao Autonomous County, south China's Guangxi Zhuang Autonomous Region, Sept. 17, 2019. A series of events were held on Tuesday in Du'an to celebrate the upcoming Chinese farmers' harvest festival. (Photo: Xinhua)

Photo taken on Sept.15, 2019 shows people dancing in fields to celebrate harvest in Lugu Village in Qixing Township of Xundian Hui and Yi Autonomous County, southwest China's Yunnan Province. (Photo: Xinhua)

Photo taken on Sept.15, 2019 shows tourists trying to remove corn kernels from the cob during an event to celebrate harvest in Lugu Village in Qixing Township of Xundian Hui and Yi Autonomous County, southwest China's Yunnan Province. (Photo: Xinhua)

Villagers harvest paddy rice at Jihua Village of Jihua Township in Rongjiang County of Qiandongnan Miao and Dong Autonomous Prefecture, southwest China's Guizhou Province, Sept. 17, 2019. (Photo: Xinhua)

Photo taken on Sept. 17, 2019 shows a view of the terraced fields at Jihua Village of Jihua Township in Rongjiang County of Qiandongnan Miao and Dong Autonomous Prefecture, southwest China's Guizhou Province. (Photo: Xinhua)

Aerial photo taken on Sept. 17, 2019 shows villagers harvesting paddy rice at Jihua Village of Jihua Township in Rongjiang County of Qiandongnan Miao and Dong Autonomous Prefecture, southwest China's Guizhou Province. (Photo: Xinhua)