Tengchong Heiyu River is located in the Heiyu River Canyon of Tengchong County Volcano Park, adjacent to the volcanic scenic columnar joints. The Blackfish River is an underground river and the largest low-temperature hot spring in Tengchong. Because its outlet releases thousands of small black fish every year in summer and autumn, it is called the Blackfish River. Where these fish come from is still unknown. And it cannot be detected in the mountains with any instrument.

Although it is just an ordinary small river, with neither rapids nor blooming flowers on both sides, the Heiyu River attracts tourists from all over to linger on its banks with its unique charm. The spring water of Heiyu River is crystal clear all year round and the flow rate does not decrease. The two most prominent streams of water, one is majestic, pouring into the Longchuan River; the other is quiet and gentle, flowing slowly.

The water of Heiyu River can be said to be natural high-quality mineral water. The river water is clear and sweet. Not only the locals drink it directly, but also foreign tourists who are tired from walking here will pick up a clear water and drink it. All. The Heiyu River, which is warm in winter and cool in summer, is also a natural cold storage for iced fruits in the hot summer.

Green aquatic plants and duckweeds cover the clear Blackwater River with a layer of green gauze. The seemingly weak aquatic plants play cheerful music in the rapid river water with their tenacious vitality. The tinkling music tells the legend of the Heiyu River; it is said that Lu Ji, the daughter of Lu Ban, the originator of carpenters, was ordered by the Jade Emperor to build a bridge here. She was spotted by the black dragon in the river. Her endless entanglement angered Lu Ji, so she destroyed it. bridge. Later, the black dragon was also immobilized by the Jade Emperor and turned into a stubborn stone. It is said that the water of Heiyu River is the tears shed by Lu Ji.

Tengchong Heiyu River is located in the Heiyu River Canyon of Tengchong County Volcano Park, adjacent to the volcanic scenic columnar joints. The Blackfish River is an underground river and the largest low-temperature hot spring in Tengchong. Because its outlet releases thousands of small black fish every year in summer and autumn, it is called the Blackfish River.

The Heiyu River, which has been flowing for thousands of years, has never dried up. The perennial green aquatic plants are the most beautiful scenery of the Heishui River. The plump little black fish is even more popular among tourists here. The paradise Heiyu River, as one of Tengchong's wonders, is worth a visit for friends who come to Yunnan.