Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

A villager works on the terraced fields in Baibang Village of Congjiang County, southwest China's Guizhou Province, March 31, 2020. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Aerial photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Aerial photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Aerial photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Dangweng Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)

Villagers walk past the terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province, March 31, 2020. (Xinhua/Yang Wenbin)

Photo taken on March 31, 2020 shows terraced fields in Bietong Village of Congjiang County, southwest China's Guizhou Province. (Xinhua/Yang Wenbin)