Traditional architecture of Han nationality
Traditional architecture of Han nationality is a construction system dominated by timber-framed structures with soil, wood, brick, tile, stone as the main building materials. As an ancient traditional craftsmanship of Han nationality, traditional architectural craftsmanship for timber-framed structures is a construction technical system using wood as the main building materials, tenon-and-mortise work as the main combination method of wooden parts, and modular system as the means of scale design as well as processing and production. Construction skill is passed on from generation to generation in the manner of teaching by personal example and verbal instruction. Embodying the Chinese understanding of nature and the universe and reflecting the Chinese traditional social hierarchy and interpersonal relations, the buildings and space constructed with this technique is a condensation of the ancient wisdom of science and technology showing the superb skills of Chinese craftsmen and also affect codes of conduct and aesthetic intention of Chinese people. The construction skill system lasts for seven thousand years and is widespread in the whole China. It also spreads to other Eastern Asian countries such as Japan and South Korea and is the representative of oriental ancient architectural technique. In 2009, Chinese traditional architectural craftsmanship for timber-framed structures declared by Building Research Institute of Chinese National Academy of Arts was selected as Intangible Cultural Heritage of Humanity by the United Nations.