Answer
The language of literature and poetry during the Timurid Renaissance was primarily Persian, but there was a significant movement, led by Ali-Shir Nava'i, to promote the use of Chagatai Turkic as a literary language. Nava'i played a pivotal role in elevating the status of Chagatai, transforming it from a language mainly used in informal settings to one that was embraced for high culture and literary expression.