Introduction to the Heluo Interchange: After leaving the Grotto Temple, wait for the tourist minibus on the roadside for 1 yuan to reach the intersection of the Luo River and the Yellow River. Heluo culture is one of the sources of Central Plains culture and even Chinese culture, and Gongyi is the source of Heluo culture. The intersection of the Yellow River and Luoshui River in Gongyi is the birthplace of the famous "Hetu Luoshu" and "Zhouyi Bagua". Standing at the intersection of Heluo River and Luo River, you can see the clear boundary between clear and turbid water.