Ceng Yi, the chief medical officer, saw Sun in episode 12. Synopsis: After graduating from Ceng Yi University, he went to the Provincial People's Hospital for an internship. On the day of registration, he happened to meet domestic western medicine experts to consult difficult diseases. When the experts couldn't come up with an ideal treatment plan, he got a chance to see a doctor by virtue of his excellent ancestral Chinese medicine skills, professional cultivation of Chinese and Western medicine and modest attitude. He was favored by the wife of the secretary of the provincial party Committee and the deputy director of the provincial health department and was hired as a provincial medical and health care expert.