The first bay of the Yellow River is located in Tangke Township, Ruoergai County, which is just at the junction of Sichuan, Qinghai and Gansu Province. The 99th bend of the Yellow River in the world, the most beautiful natural landscape is the first bay and Hukou waterfall. The Yellow River forms a large S-shaped curve here, because it is similar to the Yin and Yang Taiji map in Zhouyi, so it is known as the three-dimensional clean map of the Jiuqu Yellow River. The scenery of the first bay of the Yellow River is picturesque, and the sunset is especially excellent!