
A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua

A flock of herons perch on trees in Wangjia Village of Sitang Township in Guilin City, south China's Guangxi Zhuang Autonomous Region, Aug. 12, 2021.Photo:Xinhua