Amid the cold winter, the Yellow River Wetland at Sanhekou, Yongjing County, Linxia Prefecture, Gansu Province, has become a haven for swans seeking shelter and sustenance during winter months. Their presence has transformed the riverbanks into a picturesque “Swan Lake,” attracting numerous tourists and photography enthusiasts eager to capture the serene sight. The increasing number of rare birds wintering along the Yellow River reflects the ongoing improvements in the river’s ecological environment in recent years.