Trisong Detsen
He was a "Shang" (, imperial affine) of Tibet emperor, and Trisong Detsen was very trust him. He was a Buddhist. With his help, Trisong Detsen purged his regent Mashang Drompakye, and exiled Nganlam Takdra Lukhong to Changtang. Then, Buddhism was recognised as Tibet's state religion. Bon supporters were forced to convert to Buddhism, their cannons were buried into ground or throw into water.