Song Minying is Xu Wanchun's teacher and mentor, a rare expert in thoracic surgery for his era. He serves as the director of thoracic surgery at the Military General Hospital and is also a professor at the Shanghai Military Medical University. He has taken Xu Wanchun under his wing and considers her one of his most promising successors. He sends telegrams urging Xu Wanchun to return to Shanghai, mentioning that a capable deputy director has arrived in the trauma surgery department. He is shown off by Old Man Kong at least three times.
