Known as the divine physician, he is a barefoot traveling physician and commoner who treats patients entirely according to his whim. His nickname Yiban means one half, referring to his legendary rule of demanding half of a patient's family fortune as payment. He once refused the empress's summons, preferring to hide in the mountains rather than serve in the imperial hospital. He had recently reappeared in Yongji after some court changes. Qi He found him and offered half of the Qi family's fortune to save Situ Pin.