Bumin Qaghan

Bumin Qaghan (Old Turkic: , Bumïn qaγan, a.k.a. Bumın Kagan) or Illig Qaghan (Chinese: 伊利可汗, Pinyin: yīlì kěhàn, Wade–Giles: i-li k'o-han, died 552 AD) was the founder of the Turkic Khaganate. He was the eldest son of Ashina Tuwu (吐務 / 吐务). He was the chieftain of the Türks under the sovereignty of Rouran Khaganate. He is also mentioned as "Tumen" (土門, 吐門, commander of ten thousand) of the Rouran Khaganate.

According to History of Northern Dynasties and Zizhi Tongjian, in 545 Tumen's tribe started to rise and frequently invaded the western frontier of Wei. The chancellor of Western Wei Yuwen Tai sent An Nuopanto (Nanai-Banda, a Sogdian from Bukhara) to Kök Türks to greet its chieftain Tumen to try to establish commercial relationship. In 546, Tumen presented tribute to Western Wei.

And in the same year he put down a revolt of the Tiele tribes against their overlords the Rouran Khaganate. He took advantage of this success and requested a Rouran princess in marriage. But the qaghan of Rouran Anagui refused this request and sent to Bumin a mission and message: You are my blacksmith slave. How dare you utter these words?. Bumin got angry and killed Anagui's mission and cut all relationship with Rouran Khaganate.