Jiangnan a few years ago.
He is Li Rongyu. A romantic young man who shows mercy at all times.
He is Ren Yixuan. A stable and reserved young master of the Ren family.
He was severely poisoned, but he ran into a stranger on the street and was dragged home for treatment.
His ancestors had practiced medicine for eight generations, but this was the first time he had encountered such a restless patient.
What he won was the tragic death of Three Thousand Fallen Heroes, but the poison of the lunar calendar can only be cured by the heart of a lover.
He thought he was in love with him, but he was helpless against this poison.
Chang'an a few years later.
He is Li Rongyu. An unruly and resourceful staff member of the Nine Kings.
He is Ren Yixuan. A humble, calm and prudent member of the prince's party.
The sword at the top of the chaotang is on the wrong side. Who is whose opponent, and who is whose salvation?