"A man from Boz-Adyr, craniology, facial reconstruction from skull, paleogenetics of a man from a medieval necropolis in Tien Shan" published data on fifth ancient Y-chromosome of Khitans, which is C2-Y12792 , female line C4b1

This individual's K12 data shows that he has an 18.87% East Asian composition, 38.39% Siberian composition, and 21.04% Caucasian composition, which is between Mongolian Khulunbuir and Kazakh composition.

First 4 published cases of ancient Khitan DNA:

①Tomb of Yelu Daoqing (great-grandson of Yelu Yuzhi, cousin of Yelu Abaoji): N1b; ULA001, male line J2a2-L581, female line Y1a; ④ ZAA005 from Zaan-Khoshuu tomb in Bulgan province, Mongolia, male line J2a-M410, female line D4c1b1. ⑤ Including this time Tien Shan 14040 individuals, male line C2-Y12792 and female line C4b1.

This Tien Shan Khitan (presumably Xiliao) after recovery really looks like a typical East Asian.

Time is Xiliao period