The world's ninety-nine bends in the Yellow River, the most beautiful natural landscape is the first bend and Hukou Waterfall. These two landscapes are known as the magical map of the Jiuqu Yellow River, which is a large S-shaped curve formed by the Yellow River through these two landscapes, because it resembles the Yin and Yang Taiji diagrams in Zhouyi on the map. Therefore, it is known as. It is similar to the "life cycle" or "sun and moon cycle" doctrine of Tibetan Buddhism ("") and Tibetan Buddhism ("").