Tengyur Sutra (八寶七彩《丹珠爾》佛經)

Of all the treasures collected in Potala Palace, sutras may be the one Buddhist scholars are most interested in. The sutras are rich in content, and most of them are the only existing copies. Among all sutras in the palace, the colorful Tengyur is the most precious. Tengyur, along with Kangyur, makes up the Tibetan Buddhist canon. Kangyur consists of works supposed to have been said by the Buddha himself, while Tengyur is a collection of commentaries to his teachings. It is both a cultural masterpiece and an exquisite work of art written in ink made of gold, silver, coral, iron, green diamond, red copper, white conch shell and pearl dust. Each line is written in one of seven colors.