The word Tubo first appeared in the historical records of the Tang Dynasty in China. Fan was called by ancient Tibetans. Tubo, a political power established by ancient Tibetans in the 7th-9th century, is an ancient kingdom located on the Qinghai-Tibet Plateau, which lasted for more than 200 years from Songtsan Gambo to Mill, and was the first political power established in Tibetan history.

In the 6th century A.D., the Yalong River tribe, a Tibetan ancestor, which rose in Zedang and poverty-stricken areas in Shannan region of Tibet today, has developed from a tribal alliance into a slavery regime. Its leaders, Dabney Sai and Bao Rilunzan, gradually extended their influence to the Lhasa River basin. At the beginning of the 7th century, Songzan Gambu, son of Nanri Lunzan, conquered the ancient Qiang people Supi (now northern Tibet, southwest Qinghai) and Toarey Yang (now northern Tibet) by force, moved the first city to Luoxue (now Lhasa), and formally established the Tubo dynasty.

According to the tradition of Tibetan history, Songtsan Gampo was the 33rd king of Tubo, but before Songtsan Gampo, Tubo was not a country, because it was very backward and the links between different places were not close. After Songtsan Gampo came to power, the Tubo dynasty adapted to the needs of the slave society, formulated laws, official positions and military system, and unified measurement created writing, which made extensive contact with the Tang Dynasty, Tianzhu (now India), Nepal (now Nepal) and other places, and introduced feudal culture, and Buddhism was officially introduced to Tubo at this time.

From the middle of13rd century to the middle of14th century, Tibetan areas first belonged to Mongolia, and then were incorporated into the territory of the Yuan Dynasty, and officially became a member of the Chinese nation. During this period, Saskatchewan, a branch of Tibetan Buddhism, became the absolute dominant religious force in Tibetan areas. Baspa, a famous religious leader in Saskatchewan, was the first emperor of the Yuan Dynasty. He advocated that Tubo was a part of the Yuan Dynasty, so it was appreciated by the rulers of the Yuan Dynasty.

In A.D. 1252, as the leader of Saskatchewan, Basiba first met Kublai Khan. At that time, Kublai Khan was stationed in Liupanshan, and Kublai Khan received Ba Siba very warmly. Basiba teaches the people there four secrets of Hewajira. Kublai Khan admired Basiba's talent very much and asked him to follow himself.

After the death of Mongo Khan, Kublai Khan and Ali Buge fought fiercely for the position of Khan, and finally Kublai Khan won. The Saskatchewan Sect under the protection of Kublai Khan finally achieved a unique respect among the Tibetan Buddhism factions in the Yuan Dynasty.

In A.D. 1260, Basiba was made a national teacher by Kublai Khan. Through this appointment, on the one hand, the position of Basiba religious leader was formally established, on the other hand, Tibet was completely ruled by the Yuan Dynasty and became a part of the central dynasty. Tibet has been incorporated into Chinese territory since the Yuan Dynasty.

1280, Ba Siba died at the age of 46. This is a great loss for the whole Tibetan Buddhism.