What is the form of Tibetan residence?

Tibetan dwellings, the form of more like a bunker, so it is known as "Diaoyuan". Tibetan houses generally have three to four floors, the main room towards the south or southeast, the plane is almost square, the outer wall is very thick. Here the rain is quite small, so the roof is mostly flat. Residential room use, to four-story home for its bottom, can raise livestock and stacking fodder, sundries, the second floor for the kitchen, storeroom, the third floor for the bedroom, the fourth floor set up by the hall (Tibetans believe in Buddhism, the god above the place is not able to live or put something else, so it must be located in the top floor of the house). House has a small patio through the floor, can be used to light, ventilation. The ground floor is generally not a window, only open some ventilation holes, the second floor of the window is generally smaller, the third floor above the window is slightly larger.