宇文泰
Next year, in 546, his bannerman Ashina Tumen suppressed a Tiele revolt against Rouran. Following this, Tumen felt entitled to request of the Rouran a princess as his wife. Anagui sent an emissary to Bumin to rebuke him, saying, "You are my blacksmith slave. How dare you utter these words?". Tumen got angry, killed Anagui's emissary, and severed relations with the Rouran Khaganate, started an open revolt with help of Yuwen Tai.