Survived. According to Sina News, Yan Zhenfei survived the surgery performed by Dr. Guo Wei, the first person to perform pelvic and sacrum tumor surgery. Yan Zhenfei, when he was 26 years old, was diagnosed with pelvic Ewing sarcoma, a highly malignant tumor, due to frequent fevers. In the humanistic medical documentary "The Doctor", he successfully survived the surgery performed by Dr. Guo Wei.