Tanggangzi Hot Spring is one of the four rehabilitation centers of China. It is 15 km away from Anshan city and famous in northern China. The spring is 72°C with over 30 kinds of trace elements good for body keeping and the treatment of chronic diseases, such as rheumatism, rheumatoid arthritis, skin disease etc.. The unique hot-spring therapy was inhabited from the Tang Dynasty. The "Dragon Palace" with Phoenix pool and five-minister pools was built by the last Emperor Puyi. It is the only royal spring bathing palace remained and still open to public. Moreover, the culture relics of the "Ruins of Emperor Li Shimin", the "Long quan Villa" are within its area,and the hot mineral mud is the million-of-year volcano mud nourished by hot spring, having miracle effect in treating chronic diseases and beautifying. So there is a widely spread saying "One will not miss the chance of having mud threatment when comes to Tanggangzi Hot Spring".