Chen Yuan, a history graduate student from the 21st century, transmigrates to the Great Sui Dynasty as Chen Yuan, a fallen son of a poor family in Hongnong Commandery, courtesy name Mingyuan. After Yang Guang's third failed campaign against Goguryeo, the empire falls into turmoil. But history quietly takes a turn here: the Jiangdu coup that was supposed to happen is averted ahead of time by a mysterious figure. Yang Guang is stripped of power but survives, while a royal prince named Yang Zhao, a fictional character, rises to prominence and ushers in the "Yuanhe Revival."
