At the turn of winter and spring,the weather is still cold. In Hunan, if you want to take a trip to natural hot springs, Chenzhou Rucheng Hot Spring is a very good choice. However, do you really know about Rucheng Hot Spring? What makes it shot spring the best in South China? What are the characteristics of the famous Nuanshui Hot Springs? How much do you know about Rucheng Hot Spring? Let's decipher this “warm”city.（Translated by Rednet International Communication Center）