Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Yang Yichen was a general of the Chinese dynasty Sui Dynasty. During the late reign of Emperor Yang, Yang Yichen was one of the few Sui generals having success against agrarian rebels, but in 616, Emperor Yang, suspicious of Yang Yichen''s abilities, removed him from his military position, and thereafter the agrarian rebels went unchecked. Yang Yichen died soon afterwards. Yang Yichen''s father Yuchi Chong was ethnically Xianbei and a distant relative of the general Yuchi Jiong. Yuchi Chong was a general during Northern Zhou and had his defense post at Mount Heng. At that time, the general Yang Jian was the commandant at nearby Ding Province, and Yuchi Chong, believing Yang Jian to have great ambitions, befriended Yang Jian. After Yang Jian seized power as regent in 580, Yuchi Jiong, suspicious of Yang Jian''s intentions, rebelled at Xiang Province.