Aerial photo taken on Aug. 13, 2020 shows farmers picking marigold flowers in Qiubei County, southwest China's Yunnan Province. Covering an area of 103,000 mu (about 6,867 hectares), the planting of marigold have benefited a total of 13,000 local households with an average income increase of 12,000 yuan (about 1,727 U.S. dollars) per household. (Xinhua/Hu Chao)

Aerial photo taken on Aug. 13, 2020 shows farmers picking marigold flowers in Qiubei County, southwest China's Yunnan Province. Covering an area of 103,000 mu (about 6,867 hectares), the planting of marigold have benefited a total of 13,000 local households with an average income increase of 12,000 yuan (about 1,727 U.S. dollars) per household. (Xinhua/Hu Chao)

A farmer carries a sack of marigold flowers in Qiubei County, southwest China's Yunnan Province, Aug. 13, 2020. Covering an area of 103,000 mu (about 6,867 hectares), the planting of marigold have benefited a total of 13,000 local households with an average income increase of 12,000 yuan (about 1,727 U.S. dollars) per household. (Xinhua/Hu Chao)

Aerial photo taken on Aug. 13, 2020 shows a view of marigold flower fields in Qiubei County, southwest China's Yunnan Province. Covering an area of 103,000 mu (about 6,867 hectares), the planting of marigold have benefited a total of 13,000 local households with an average income increase of 12,000 yuan (about 1,727 U.S. dollars) per household. (Xinhua/Hu Chao)

Aerial photo taken on Aug. 13, 2020 shows a view of marigold flower fields in Qiubei County, southwest China's Yunnan Province. Covering an area of 103,000 mu (about 6,867 hectares), the planting of marigold have benefited a total of 13,000 local households with an average income increase of 12,000 yuan (about 1,727 U.S. dollars) per household. (Xinhua/Hu Chao)