Diaolou is the most distinctive form of residence for Tibetans. Tibetan Diaolou is the traditional residence of Tibetans. It is very old and was the resting place of Tibetan ancestors. It is also a military building with defensive functions. In 2008, the construction skills of Tibetan Diaolou were selected into the second batch of China's national intangible cultural heritage protection list. The earliest record of Diaolou in ancient Chinese literature is in the "Book of the Later Han Dynasty: Biography of the Southern Barbarians and Southwestern Yi": "Ran Yi was founded by Emperor Wu. In the sixth year of Yuanding, it was made into Wenshan County (now Maofen Qiang Autonomous County in northwest Sichuan). They all lived in the mountains and piled up stones to make rooms. The height of the room was more than ten feet, which was called "Qionglong". "The "Qionglong" mentioned here is the earliest name for Diaolou buildings seen so far. Most areas in Tibet have a high average altitude and a cold and dry climate. The stone piles on the wasteland have become the main material for people to build houses. Tibetans use stones and stone pieces to build three or four-story houses, which are named Diaolou because they look like a fortress. Diaolou is square, narrow at the top and wide at the bottom, with a flat roof. Diaolou have different characteristics depending on the region they are located in. In cities, the layout of Diaolou is reasonable, the shape is complete, and the decoration is rich. Generally, it has three floors, and the highest is five floors. The walls are made of stone, the pillars are made of wood, and the rafters are made of square wood. The first floor is paved with wooden boards. The lower floor is used as a warehouse, and the second and third floors are used for living. There is also a scripture hall. It is surrounded by walls and a courtyard in the middle. The walls are thick. In the old days, it could be used as a blockhouse for fighting or defense. The windows are open to the courtyard, and small windows and narrow doors are used outside the courtyard to block the wind. The rooftop platform can be used to dry things, or take a walk or sightseeing. Diaolou in rural and mountainous areas are generally built against the mountain. Most of them are three floors: the first floor is used to keep livestock, the second floor is used as a bedroom, kitchen and storage room, and the third floor is used for scripture hall. The flat roof is used to dry grain. Prayer flags are inserted on the roof. There are usually prayer sticks next to the house. There are usually shrines and scriptures in the room. Usually, there are no beds or tables and chairs. People sleep and sit on mats. For high-end residences, one or more high open corridors are set up at the main entrance or outside the main rooms. The closed watchtowers and open eaves are very ethnic. (No pictures yet, welcome to provide.) (No pictures yet, welcome to provide.)