Yang Jun (prince)
Yang Jun (楊俊) (571 – 4 August 600), nicknamed Azhi (阿祇) and formally known as Prince Xiao of Qin (秦孝王), was an imperial prince of the Chinese Sui dynasty. He was a son of Emperor Wen (Yang Jian) and his powerful wife, Empress Dugu. Yang Jun died as a result of an illness caused by poisoning, allegedly by his jealous wife, Princess Cui. His son, Yang Hao, was later briefly declared emperor by the general Yuwen Huaji after Yuwen killed Yang Jun's brother, Emperor Yang, in 618.