Analysis of information sources in references of the Wikipedia article "Tian Shan" in English language version.
祁連山即天山也,匈奴呼天為祁連 (translation: Qilian Mountain is the Tian Shan, the Xiongnu called the sky qilian)
祁連山即天山也,匈奴呼天為祁連 (translation: Qilian Mountain is the Tian Shan, the Xiongnu called the sky qilian)