Traditional residences tend to conform to their environment and to become integrated with it. They are expelled to blend with the surrounding rivers and mountains, thus complementing but never spoiling the natural beauty. Our ancestors made use of local materials and took the natural factors into consideration whenever they built a house. 3.In calligraphy, the Chinese characters with a roof-like component relate to various houses. For example, with "pig", it is "home"; with "cow", it is "prison"; with a combination of two mouths it means "many houses"----it is palace. Such characters combined with that for "woman" imply peace and safely. The logic behind this is based on two layers of meaning. Firstly, when a woman sits peacefully at home, it means there is no war. Secondly, when they lived in simple caves in open air, our ancestors faced the hazards of rough weather, wild animals and hostile tribes. By building houses, they were better protected, thus there was safety.