According to the investigation and demonstration of Guangdong Geological Engineering Consulting Company under the Ministry of Land and Resources, Relang Hot Spring is a multi-point hot spring group, and there are more than ten hot springs with water temperature of 47-98℃, which can meet the temperature requirements of different uses and ensure the "original flavor" of hot spring water. Experts have confirmed that it is one of the hot springs with the highest water temperature and the largest reserves among the hot spring resorts that have been developed and built in China. Hot spring water is clear, crystal clear and smooth, and is rich in more than 60 kinds of trace mineral elements beneficial to human health. Among them, the contents of metasilicic acid, fluorine and radon all exceed the national naming standard for medical hot mineral water, and they are named silicon spring, fluorine spring and radon spring. Among the hot springs that have been developed and utilized in China, it is a rare natural and pollution-free high-quality hot spring, which is world-class in terms of environment, water temperature, water quantity and medical care function, and is known as "the first hot spring in Lingnan".