At first, Sean was a Confucian. Later, he met Huang Shigong. After picking up shoes for Huang Shigong, he taught Sean a squire's art of war and assisted Liu Bang. Although it is called Sun Tzu's Art of War, I don't think it is Sun Tzu's Art of War, but the general plan of Legalists to govern the country. Because Sean's military strategy didn't show at that time, except for the deviant use of Xiang Yu after the siege, he didn't show his military strategy. On the contrary, Han Xin's military strategy is better than Sean's. But at that time, Sean's political strategy was unparalleled, which showed that Sean's method was legalism. After the founding of the People's Republic of China, Sean resigned and lived in seclusion, leaving Liu Bang as a monk. He is also a Taoist. In the meantime, Liu Bang was repeatedly asked to give him advice and solve his internal affairs. After the political situation in the Han Dynasty was stable, he devoted himself to seclusion and cultivation of immortals to study the gossip of Yin and Yang families, so he became a Yin and Yang family again and began to cultivate immortals. Later, after Liu Bang's death, Lv Zhi came to power, sent someone to look for Sean, and tried to kill him, thinking that if Sean did not die, her regime would be threatened. Later, she found Sean on a mountain. When she saw Sean, a scrawny Lv Zhi, she smiled: Sean is a half-dead man now and will not pose a threat to me. Lv Zhi returned to the palace without killing Sean, and Sean soon starved to death.

Therefore, Sean is not only a Confucian, a Legalist and a Taoist, but also a Yin-Yang family.