The reeds sway in the wind and sing the sound of rustling. Wetlands refer to shallow or shallow areas with static or flowing water bodies, such as natural or artificially formed marshes. Wetlands, forests and oceans are called the world's three major ecosystems. , widely distributed throughout the world. There are a large number of animals and plants in the wetland ecosystem, and many wetlands are classified as nature reserves. Yinchuan rarely rains here, but it has always been rich and rich because it has abundant underground rivers and wetland resources.