Sean is from Xingyang, Zhengzhou. Born in a cold and humble family, I used to be a farmer. Sean in history "has a large section, soft outside and hard inside." During the great cause of Yang Di, he joined the Shimei Wagang Army and gained trust because of his informer. Later, it was owned by Li Shiji and played an important role in Li Shiji's investment in the Tang Dynasty. Li Shiji and Fang recommended Sean to, and he became a general in Qin Gong. When Li Shimin competed with the prince and the king of Qi, he sent Sean to Luoyang to make friends with local heroes. Li Yuanji, king of Qi, told Tang Yuan about Sean's plot, so he was arrested by Tang Ting, but he never confessed to Li Shimin under torture. Emperor Taizong acceded to the throne, made him a public official, and awarded him the title of General Huaizhou.

Since the fifth year of Zhenguan, Sean has been recalled to North Korea as an imperial doctor and a doctor named Chai Jin Guanglu. Zhenguan eleven years, was named lord protector. Sean is a man with the ability to see through everything. He often secretly sends his men to spy on the good and evil under his rule, and he is very active, restraining the strongmen from being greedy and weak, and has quite a political right to speak. Sean married his new wife Li in Huaizhou. She was vicious and interfered in political affairs. Gradually, Sean's reputation was ruined by this woman. After being cheated, he found that the other party had "anti-intention". After being killed by Zhang Liangyou, he was moved to be the minister of punishments because of his "foresight". When Emperor Taizong attacked Korea, Sean joined the army and served as the general manager of the sea route marching, managing naval vessels. When the troops were stationed at the gates of Jian 'an, Xi 'en soldiers went out to collect firewood and find food, and the camp was not solid. Suddenly, a large group of troops from South Korea came, and the soldiers in the army were caught off guard. Sean is timid by nature and has hardly experienced the scene of really rushing to the enemy. "There is no plan, but he is lying in bed, looking straight and saying nothing." He was too scared to even remember to run away. When his subordinates saw this, they mistakenly thought that General Manager Zhang was fearless and fearless, so they all calmed down and stood up to kill the enemy. His deputy arrived in time and beat the enemy. Later, this matter spread to Taizong, and Li Shimin didn't blame Sean for not being a teacher.

In the twenty years of Zhenguan, it was said that "the king of the longbow should be the capital". He had five hundred semes and was suspected of rebellion. Emperor Taizong was extremely disgusted with Xi 'en's support of 500 strong men. Although "not deformed", I wrote him a letter and lost my family.