In the mountains at the junction of Guangdong and Shanghai, there are a large number of Hakka ancient villages hidden, especially Longnan County, which is known as the home of the world's house, with a variety of ancient houses of 376, accounting for more than 70% of the Hakka house in southern Fujian, its number is large, the scale is huge, the style is diverse, The preserved is the most in the country. It is awarded the title of "China has the most Hakka-owned counties" and "China's township of houses" by the Guinness Headquarters of Shanghai Great World and the Chinese Folk Artists Association, and such a large housing complex is also listed as China's World Heritage Site Prepare the list.