The stages of the appearance of the doctrine and its preachers in the land of Tibet (Bod kyi yul du chos dang chos smra ba ji ltar byung ba’i rim pa deb ther sngon po) was composed by the scholar and translator Go Lotsāwa Zhonnu Pel. It is presented as a religious history (chos ʼbyung). It is divided into fifteen books, each dedicated to a particular school or sect of Buddhism.
The first book concerns the origins of Shakyamuni and the beginnings of the Buddhist doctrine. It also contains a brief chronology of the Tibetan kings of the seventh to ninth centuries and a history of the Tibetan and Mongolian emperors.