Hundreds of millions of butterflies have began to emerge from chrysalises in the Honghe butterfly valley in southwest China's Yunnan Province, forming a rare ecological spectacle. "Butterfly explosion" refers to the seasonal landscape formed in late spring and early summer every year, in which a large number of Stichophthalma larvae pupate in a short period of time and then emerge into butterflies, according to Yang Zhenwen, curator of the butterfly valley museum in Ma'an'di Town under Jinping Miao, Yao, and Dai Autonomous County. Photo taken on June 9, 2022 shows butterflies in the Honghe butterfly valley in southwest China's Yunnan Province. (Xinhua/Hu Chao) "Based on the samplings at 23 observation sites in the valley, the total number of butterflies during this year's explosi...
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