People view exhibits at a museum of Chengjiang Fossil site in Chengjiang County, southwest China's Yunnan Province, Oct. 14, 2021.Photo:Xinhua

People view exhibits at a museum of Chengjiang Fossil site in Chengjiang County, southwest China's Yunnan Province, Oct. 14, 2021.Photo:Xinhua

People view exhibits at a museum of Chengjiang Fossil site in Chengjiang County, southwest China's Yunnan Province, Oct. 14, 2021.Photo:Xinhua

Aerial photo taken on Oct. 13, 2021 shows a museum of Chengjiang Fossil site in Chengjiang County, southwest China's Yunnan Province.Photo:Xinhua

People view exhibits at a museum of Chengjiang Fossil site in Chengjiang County, southwest China's Yunnan Province, Oct. 13, 2021.Photo:Xinhua

A man takes photos of exhibits at a museum of Chengjiang Fossil site in Chengjiang County, southwest China's Yunnan Province, Oct. 13, 2021.Photo:Xinhua