Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Yang Jian (585-618), courtesy name Shiku, nickname Ahai, was an imperial prince of the Chinese dynasty Sui Dynasty. During the reign of his father Emperor Yang, he carried the title of Prince of Qi. When his father was killed in a coup led by the general Yuwen Huaji in 618, Yang Jian and his sons were also killed. Yan Jian was born in 585, during the reign of his grandfather Emperor Wen. He was the second son of Emperor Wen''s son Yang Guang the Prince of Jin and Yang Guang''s wife Princess Xiao. Yang Jian was considered handsome in his childhood, and Emperor Wen loved him. In 593, Emperor Wen created him the Prince of Yuzhang. As he grew in age, he studied the Confucian classics and histories. In 599, Emperor Wen made him the head of the legislative bureau, one of the five main bureaus of government. In 600, due to Yang Guang''s machinations, Emperor Wen deposed Yang Jian''s uncle Yang Yong the Crown Prince, and created Yang Guang crown prince instead. In 601, Yang Jian was made the commandant at Yang Province, to replace his father Yang Guang.