Suluk,[1] Sul-lu[2] or Sulu (?-738) was a Türgesh tribal leader and a Qaghan who defended Transoxiana against Umayyad conquest in the early 8th century.
During Qapaghan Qaghan's death and Kul Tegin's coup, they used the opportunity to reassert independence and chose Suluk, a Black Türgesh chieftain to be their supreme leader in 715[3] or 716.
[5] However, this ended up causing a rift between the two, as Suluk defeated Xian on June or July of 717, besieging Aksu and Uch Turfan along the way.
Xuanzong had to accept Suluk's independence and titled him as the Duke of Shunguo (順国公) in 718 and Zhongshun Khagan (Chinese: 忠順可汗; lit.
Throughout the conflicts, the Arab army had to withdraw to find fresh water, such as in the Day of Thirst in 724 and the Battle of the Defile in 731.
In late 726, after Du left his office, Suluk attacked Tarim Basin, causing much damage.
The policy of the Abbasid Caliphs was more peaceful than that of the Umayyads and Arab control of Transoxiana was limited to the occupation of a few forts.