Unfortunately, it is not illustrated in the written sources of that time what Taraz looked like but it is said to have been a big city . The Chinese pilgrim Xuanzang, who passed through Taraz in 630 came to the Ta-lo-se and noticed that the perimeter of the wall is 8 to 9 "li"(according to the Chinese measures one tang li is about 453 meters) in this city alternately. Due to written sources and archaeological investigation it is known from the 1st BC to 5th AD Kangui (Kanglu) tribes lived in the Talas River Valley. Similarity between the excavated materials of Taraz and the Kurgans of the Gynskyi and Usunskyi-Kanguiskyi tribes show the introduction of Turkic language. Mongolian features and elements appear in the settled culture of local mainly European population. According to A. N. Bernshtam's statement it was a period of ethnogenesis for Central Asia's modern Turkic populations Taraz was joined to the Western Turk Khanate. It felt, like other cities of the region, the influence of Sogdian culture.