I am Li Kuan...a traveler from the future, I traveled to Datang in the tenth year of Zhenguan. I want to become the prince of Datang, not for anything else, but because Li Shimin's three sons are all useless. Impatient with the teacher's persuasion, he even sent a killer to assassinate his teacher. Li Tai is even more insidious and will do anything for the throne. As for Li Zhi, he has a cowardly character and threw the throne to a woman, which made the Li family almost killed Do. Now that I am here, I must win the crown prince position and become the emperor of the Tang Dynasty, so that the glory of the Tang Dynasty will continue for another hundred years, or a thousand years. This should be the main reason why I traveled back!