Kyrgyz language
After the Mongol conquest in 1207 and a series of revolts against Yuan oppressive policy, Kyrgyz-speaking tribes started to migrate to Tian Shan, which was already populated by various Turco-Mongol tribes. As Chaghatai Ulus subjects, the Kyrgyz converted to Islam. Persian and Arabic vocabulary loaned to the Kyrgyz language, but to a much lesser extent than Kazakh, Uzbek and Uighur.