His real name is Zheng Shaopeng, 19 years old, 177cm tall. A freshman in college. Cheerful and optimistic, diligent and eager to learn, he loves to stand up for the underdog and possesses a maturity beyond his years combined with the playfulness of youth.

He loves history, but unexpectedly, he travels back to the Danzhu Dynasty and becomes a poor scholar suffering from appendicitis named Yang Lin. Witnessing the chaos of war and the suffering of the people, he gradually resolves to use his abilities to benefit the people and protect the country.