
Restored Uyghur power after Bogu was killed.
Tun Bagha Tarkhan led a coup that assassinated Bogu Qaghan, seizing power. He opposed Bogu's Manichaean policies and pro-Sogdian stance, restoring traditional Turkic practices.
Tun Bagha Tarkhan restored Uyghur power after the turmoil of Bogu's reign. He reasserted control over the khaganate, stabilized the economy, and renewed the alliance with Tang China.
Tun Bagha Tarkhan led military campaigns against the Tibetan Empire, which was expanding into the Tarim Basin. The Uyghur forces defeated the Tibetans, securing control over the Silk Road trade routes.
Tun Bagha Tarkhan died in 789, succeeded by his son Baoyi Qaghan. His reign restored stability and power to the Uyghur Khaganate after the crisis of Bogu's assassination.