Mr. SUN has been involved in clinical work for 38 years, with advanced training at Hunan Xiangya Hospital, the Cardiovascular Medicine Institute of Guangdong Provincial People's Hospital, and the Alfred Hospital in Australia. He possesses extensive clinical experience in pre-hospital and in-hospital emergency care for various internal medicine conditions. He specializes in the diagnosis and treatment of arrhythmias, coronary heart disease, heart failure, hypertension, and cardiomyopathy.

He was appointed Deputy Director of the Emergency Medicine Committee of the Shenzhen Medical Association, Director of the Shenzhen Public Emergency Training Base, and Chairman of the Emergency Medicine Association of Longgang District. He has hosted 5 municipal and district-level research projects in Shenzhen, published over 10 papers in core journals and authored 1 academic book, and holds 2 personal invention patents.