History of the Turkic peoples
|Turkic Khaganate 552–744|
|Khazar Khaganate 618–1048|
|Great Bulgaria 632–668|
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|Turk Shahi 665–850|
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|Uyghur Khaganate 744–840|
|Karluk Yabgu State 756–940|
|Kara-Khanid Khanate 840–1212|
|Gansu Uyghur Kingdom 848–1036|
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|Oghuz Yabgu State
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|Seljuk Sultanate of Rum|
|Kerait khanate 11th century–13th century|
|Khwarazmian Empire 1077–1231|
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|Qarlughid Kingdom 1224–1266|
|Delhi Sultanate 1206–1526|
|Golden Horde |  1240s–1502|
|Mamluk Sultanate (Cairo) 1250–1517|
|Ottoman Empire 1299–1923|
The Xueyantuo (薛延陀) (Seyanto, Se-yanto, Se-Yanto) or Syr-Tardush were an ancient Tiele Turkic people and Turkic khanate in central/northern Asia who were at one point vassals of the Gokturks, later aligning with China's Tang Dynasty against the Eastern Gokturks. The Xueyanto homeland is near the Selenga River/Xueyanhe River (薛延河江/偰輦河江), so their tribe's name is Seyanto/Xueyantuo (薛延陀), Chinese Han characters underwent considerable changes according to changes in Chinese dynasties, so the tribe is variously known as Xueyantuo, Xueyanhe, Xienianhe, Seyanto, Selenga, Selyanha, etc.
Initially the Xue and the Yantuo were two separate tribes. The Xue appeared earlier as Xinli but were not referred to again until the 7th century. After Yishibo, the Xueyantuo founded a short-lived Qaghanate over the steppe under Zhenzhu Khan, his son Duomi Khan and nephew Yitewushi Khan, the last of which eventually surrendered to the Chinese.
On March 27, 630, the Xueyantuo allied with the Chinese to defeat the Eastern Qaghanate in the Yin Mountains. Illig Qaghan escaped, but was handed over to the Chinese by his subordinate qaghan on May 2.
After Eastern Gokturk Illig Qaghan Ashina Duobi was defeated by Tang in 630, the Xueyantuo effectively took over control of the Eastern Gokturks' former territory, at times submissive to the Tang and at times warring with the Tang and the subsequent khan of the Eastern Gokturks that Tang supported, the Qilibi Khan Ashina Simo.
In 632 the Xueyantuo repulsed an army of Si Yabgu Qaghan from the Western Qaghanate, then subjugated the Qarluq at the Ulungur and Irtysh River, and then the Yenisei Kyrgyz tribes. In 634 one of their rivals, Dubu Qaghan (Ashina Shier), son of Chuluo Khan, who ruled much of the eastern half of the Western Qaghanate, was eliminated before escaping to China.
After that they maintained a friendly relationship with the Chinese until 639, when a raid on the Chinese capital was planned by the Gökturks under Ashina Jiesheshuai (阿史那结社率), who had been disparaged by the Chinese emperor. He allied with his nephew Ashina Heluohu (阿史那贺逻鹘), choosing him as the leader of the raid on May 19. They were unsuccessful and over 40 rebels were executed. Heluohu was spared and expelled to the far south.
After this incident, an arraignment was made on August 13. A deportation of all Goktürks north of Ordos was carried out, in an attempt to restore the puppet Eastern Qaghanate as a barrier against the Xueyanto, in an attempt to distract them from the territorial competition in the west.
Among the Göktürk nobles, Ashina Simo was selected as the qaghan (Qilibi Khan) with his capital at the border. The plot failed, as he was unable to gather his people, many of his tribesmen having escaped to the south by 644 after a series of unsuccessful incursions by the Xueyantuo supported by the Chinese. Defeats by the advancing Chinese had made their tribal allies lose confidence in them. The crisis deepened the next year when a coup d'état took place within the clan.
On August 1, 646, the Xueyantuo were defeated by the Uyghur (Huihu, 回纥) and the Chinese. The Xueyantuo's Duomi Khan, Bazhuo, was killed by the Uyghur. A Tang army led by the general Li Daozong, the Prince of Jiangxia, crushed the Xueyantuo forces. The last Xueyantuo khan, the Yitewushi Khan Duomozhi, surrendered. Their relationship with the later Shato Turks is contested. Their remnants were destroyed two years later, on September 15.
Khans of Xueyantuo
- Yishibo (乙失缽), the Yiedie Khan (也咥可汗) (?-628?)
- Yi'nan (夷男), the Zhenzhupiqie Khan (真珠毗伽可汗) or, in short, Zhenzhu Khan (真珠可汗) (628-645)
- Bazhuo (拔灼), the Jialijulishixueshaduomi Khan (頡利俱力失薛沙多彌可汗) or, in short, Duomi Khan (多彌可汗) (645-646)
- Duomozhi (咄摩支), the Yitewushi Khan (伊特勿失可汗) (646)
Surname of Khans
The surname of Xueyantuo's khans is uncertain, although modern Chinese historian Bo Yang lists their surname as "Yishi" in his edition (also known as the Bo Yang Edition) of the Zizhi Tongjian, but without citing a source. It is possible that Bo was influenced by the Tongdian, which refers to the Xueyantuo surname as Yilitu (壹利吐, Yiliduo 一利咄 as in Cefu Yuangui and Yilidie 壹利咥 as in New Book of Tang).
According to Cen Zhongmian, the aforementioned names are related to a variant of elteris. Duan Lianqin asserted that the name Yishibo (Yiedie Khan) can also be read interchangeably as Yedie (也咥). The Zizhi Tongjian, in the original, referred to one ethnic Xueyantuo general named Duomo, possibly the Yitewushi Khan (after he became a Tang general) by the family name of Xue—although the Tang Huiyao indicated that it was not the same person, as it indicated that the Yitewushi Khan died during Emperor Taizong's reign.
The Tang Huiyao also asserted that the rulers of Xueyantuo claimed to be originally named Xue (薛/偰), and that the name of the tribe was changed to Xueyantuo after the Xue defeated and merged the Yantuo into their tribe.
During the late Tang Dynasty, a group of Xueyantuo remnants known as Shatuo began to play a very important role in Chinese politics. Leaders of the following Jin Kingdom, the Later Tang, the Later Jin, the Later Han and the Northern Han state during the Five Dynasties and Ten Kingdoms were largely ethnic Shatuo.
- List of Turkic dynasties and countries
- Timeline of Turks (500-1300)
- Selenga River
- Later Tang
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