He was originally Zhu Yuanzhang's most valued prince and the hope of the Ming Dynasty, but he died young outside Jinling City. When he opened his eyes again, he became the most inconspicuous prince of Tang Taizong Li Shimin. From the crown prince of a fallen country to the prince of a prosperous age, from being imprisoned in the shadow of Zhu Yuanzhang's suspicion to being trusted by Li Shimin in the palm of his hand - this time, he will personally create a prosperous age that surpasses Zhenguan.