Over 2,000 visitors come to the reputed Tuankou Zhongandong hot spring in Linan, East China's Zhejiang province, to bath in the hot water on Dec 1, 2013. The Tuankou hot spring has a long history spanning over 1,000 years. The hot spring is 1,500 meters deep, and has a 3,000 ton daily water yield with temperatures reaching 47 degrees Celsius. It is one of the heavy calcium carbonate hot mineral springs which contain plenty of mineral elements, such as radon, radium, barium and strontium. The hot spring features 29 outdoor and 17 indoor pools, offering different types of hot springs which contain a variety of things such as ginger, medlar and milk. [Photo/icpress]