Longnan, an ancient place hidden in the mountains of southern Anhui, although for many foreigners is a little known existence, but it is not simple, it is not only the world's heavy rare earths, or the world's housing capital, with various kinds of housing 376, accounting for 70% of the southern Anhui housing, Its number, scale, special style, and intact preservation are the most in the country. It was awarded the title of "the county with the most Hakka house" and "the township of China house" by the Guinness Headquarters of Shanghai World and the Chinese Folk Literature and Artists Association respectively. It is also successfully listed on the preparatory list of China's World Heritage Sites. It is probably only a matter of time before it will be included in the World Heritage Sites like Fujian Tulou and Kaiping Yilou in the future.