A drone photo taken on April 19, 2024 shows an egret resting in a nest at the Qingshuitan wetland park in Gaoyou, east China's Jiangsu Province. Thanks to protection work carried out by local authorities, the ecosystem in Qingshuitan wetland park of Gaoyou has been improved in recent years. Various species of birds have chosen this park for nesting and breeding. (Xinhua/Ji Chunpeng)