Sean (about 250 BC-65438 BC +086 BC), the duke of Yingchuan, was an outstanding counselor and minister in the late Qin Dynasty and early Han Dynasty, and was also called "three outstanding heroes of early han dynasty" with Han Xin and Xiao He.
Sean's grandfather, father and other ancestors served as prime ministers for five generations in Yangzhai (now Yuzhou, Henan), the capital of the South China.
He persuaded Liu Bang to make peace at the Hongmen banquet, saved his strength, dredged Xiang Yu's uncle Xiang Bo, and let Liu Bang get away. Later, with excellent ingenuity, he helped Emperor Gaozu Liu Bang win the world in the Chu-Han War, and helped Lv Hou to support Liu Ying to ascend to the throne of the Prince, and was named Liu Hou.
He knows the way of Huang Lao and doesn't want to stay in power. In his later years, he is said to have traveled with red pine. After Sean's death, he was named Wen Chenghou. Shi Hou specially recorded his life. Liu Bang, the emperor gaozu of Han Dynasty, commented on him in Nangong, Luoyang, saying, "My husband won a hundred battles thousands of miles away, and I am not as good as an ovary." It shows Sean's witty planning and literary skills. Later generations respected him for his excellent strategy and called him "seeking holiness"