In the winter season, in Guide County, Hainan Tibetan Autonomous Prefecture, Qinghai Province, the clear Yellow River slowly flows over the bridge under the rosy glow, and a pair of "swans" watching each other on the bridge are eye-catching. On the banks of the Yellow River, flocks of swans swim and frolic while foraging, complementing the distant "Swan Bridge" and forming a harmonious and dynamic ecological picture.