The severe conditions that often imperil survival on the towering Tibetan Plateau have helped for it unique culture, along with its close ties with the Central Plains. Tibetan literature not only reflect the life, thoughts, and esthetics of different levels at various phases in Tibetan history, but also provides an important reference for the study of the Tibetan language and origin of words, social history, religion and belief, morality and behavior, the spiritual world, as well as local conditions and customs ¡¡
