In the domestic circle of gastrointestinal surgery, 80-year-old professor Chen Daoda is famous for his solid academic foundation and great clinical accomplishments while among those ordinary patients in Union Hospital, he is well known for his living in the wards all year round and regarded as the  easiliest-accessible professor. He said: “It's difficult for a patient to find experienced doctors After work-time or in holidays when in emergency. For me, staying in the ward is a pleasant thing.”