Bai Shu was originally a doctor's son. He was framed by his stepmother and mistakenly entered the palace as a concubine. However, due to a chance when he was young, a joke caught the emperor's eye and he has been in his sight for thousands of years.
Sick, weak and sinister, he likes to tease boys and girls. He has a talent for intelligent medical skills and accidentally ends up in the palace as a concubine.