What are the traditional folk houses in southern Fujian?

The traditional houses in southern Fujian are tulou. Fujian Tulou is also called Hakka Tulou, because most of them were built by Hakka people in Fujian. Tulou originated in Song and Yuan Dynasties and matured in the late Ming and early Qing Dynasties and the Republic of China. Taking soil, wood, stone and bamboo as the main building materials, adding a certain proportion of sandy clay and clayey sand into unbaked soil, and tamping it with sandwich board to form a house with more than two floors. Fujian Tulou include Gaobei Tulou, Hongkeng Tulou, Chuxi Tulou, Xiang Yan Tulou and Zhen Fu Tulou in Yongding County, Tianluokeng Tulou, Hekeng Tulou, Guilou and Huaiyuan Tulou in Nanjing County, and Huaan Tulou. Er Yi Lou, located in Dida Village, Xiandu Town, Hua 'an County, is an outstanding representative of China Yuanshilou ancient residence. It is famous for its large scale, scientific design, reasonable layout and well-preserved, and is a national key cultural relics protection unit.