Du Weliun looked fifty-or-so-years old, and had a tall frame. He was dark-skinned and beardless. (SL 2 ch22.3)
He was the director of the outer courtyard’s Martial Soul Department. He possessed the greatest authority in the outer courtyard. He first appeared overseeing the Freshmen's test. He rejected the prospect of Huo Yuhao joining the Martial Soul Department of Shrek Academy.