Birds fly over Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province, June 17, 2022. Photo:Xinhua

Photo taken on June 17, 2022 exhibits the surroundings of Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province. Photo:Xinhua

Tourists benefit from the surroundings on a ship in Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province, June 17, 2022. Photo:Xinhua

Aerial picture taken on June 17, 2022 exhibits the surroundings of Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province. Photo:Xinhua

Aerial picture taken on June 17, 2022 exhibits the surroundings of Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province. Photo:Xinhua

Aerial picture taken on June 17, 2022 exhibits the surroundings of Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province. Photo:Xinhua

Aerial picture taken on June 17, 2022 exhibits the surroundings of Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province. Photo:Xinhua

Photo taken on June 17, 2022 exhibits the surroundings of Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province. Photo:Xinhua

A fowl flies over Qixinghe National Nature Reserve in Baoqing County, Shuangyashan City, northeast China’s Heilongjiang Province, June 17, 2022. Photo:Xinhua