Chongqing, a mountainous city, boasts world-class hot spring resources, which could only be compared to those in Budapest, the capital of Hungary, which is praised as the "City of Spas". Chongqing has a long history of hot springs. Based on the rich natural resources, Chongqing authority in 2005 decided to build Chongqing into the "City of Hot Springs", and make hot springs one of its four "city business cards".