Villagers harvest ottelia acuminata flowers at an ottelia acuminata planting base in Eryuan County of Dali Bai Autonomous Prefecture, southwest China's Yunnan Province on June 5, 2024. Ottelia acuminata only lives in fresh water of high quality, and is viewed as an indicator species of the natural environment. Its flowers are taken as an important food ingredient for people of the Bai ethnic group in southwest China. (Photo by Luo Xincai/Xinhua)
Newly harvested ottelia acuminata flowers are pictured at an ottelia acuminata planting base in Eryuan County of Dali Bai Autonomous Prefecture, southwest China's Yunnan Province on June 5, 2024. Ottelia acuminata only lives in fresh water of high quality, and is viewed as an indicator species of the natural environment. Its flowers are taken as an important food ingredient for people of the Bai ethnic group in southwest China. (Photo by Luo Xincai/Xinhua)
A drone photo taken on June 5, 2024 shows villagers harvesting ottelia acuminata flowers at an ottelia acuminata planting base in Eryuan County of Dali Bai Autonomous Prefecture, southwest China's Yunnan Province. Ottelia acuminata only lives in fresh water of high quality, and is viewed as an indicator species of the natural environment. Its flowers are taken as an important food ingredient for people of the Bai ethnic group in southwest China. (Photo by Luo Xincai/Xinhua)
Villagers harvest ottelia acuminata flowers at an ottelia acuminata planting base in Eryuan County of Dali Bai Autonomous Prefecture, southwest China's Yunnan Province on June 5, 2024. Ottelia acuminata only lives in fresh water of high quality, and is viewed as an indicator species of the natural environment. Its flowers are taken as an important food ingredient for people of the Bai ethnic group in southwest China. (Photo by Luo Xincai/Xinhua)
An aerial drone photo taken on June 5, 2024 shows villagers harvesting ottelia acuminata flowers at an ottelia acuminata planting base in Eryuan County of Dali Bai Autonomous Prefecture, southwest China's Yunnan Province. Ottelia acuminata only lives in fresh water of high quality, and is viewed as an indicator species of the natural environment. Its flowers are taken as an important food ingredient for people of the Bai ethnic group in southwest China. (Photo by Luo Xincai/Xinhua)
