There are really hot springs in Lihu Town. According to the relevant public information, Tangtou Hot Spring is the second natural radon-containing hot spring discovered in Guangdong and Conghua. Located in Lihu Town, Puning City, Guangdong Province, with a total area of about 19 hectares, it has a hot gas field exposed by hot springs, with an average water temperature of 61.7℃ to 72℃ and a daily overflow of 4,111 tons. It belongs to light hot springs and radon hot springs, and the radon content is more than 1.72.4 becquerels/liter. It is planned to be built into a tourist resort with vacation and conference as its main functions, and it is a real radon-containing hot spring.