In the revolt of An Lu-shan emerged in China in the year of 755, the Uighur Khan M’o-yen-ch’o, who sent an army under the control of his son Yehhu (Yabgu), and who played an active role in the suppression of the revolt, gained an immense ascendance; as a result, the emperor of T’ang, in exchange for his help, married his legitimate daughter to the Uighur Khan. Not much information is available about what kind of loot, except his marriage, was given to the Khanate of Uighur by the T’ang palace; however, it is known that permission was granted to plunder both capitals of China. The army sent to suppress the revolt of An Lu-shan, and also the aftermath occurrences were most probably narrated in the first parts of the west face of the inscription of Sine Usu. Nevertheless, since most part of the inscription fell into ruin, sentences can only be partly read. Information about the town of Baybalık is mentioned in the 5th line of this face, and in the short sentence here it is has been indicated that the town situated on the coast of the river Selenga was made to build by the Sogd and Chinese. In this article, the relationship between T’ang-Uighur, and in the light of the inscription of Sine Usu; the name, information about the place where it is situated as well as the purpose of the construction of the town of Baybalık, which -we think- was as a result of the loot promised in exchange for the help with An Lu-shan revolt, are to be analyzed. Keywords: The Khanate of Uighur, Settled Life, Town, The inscription of Sine Usu, Baybalık.