1. Education background: Cai Cheng graduated from tongji hospital, Huazhong University of Science and Technology with a master's degree in cardiothoracic surgery, and then went to the Central Hospital of Lausanne University, Switzerland, where he obtained a doctorate in medicine and a doctorate in life science.

2. Work experience: Cai Cheng studied with Professor HansBeatRis, a famous European thoracic surgery expert. Professor HansBeatRis is an academician of the Royal College of Surgeons and the director of thoracic surgery and vascular surgery at the Central Hospital of Lausanne University in Switzerland.