Han Zhen   Vice President of Peking University Shenzhen HospitalDirector ofCardiovascular Surgery, Chief Physician     · Ph.D., Professor, and Chief Physician. Specializes in coronary artery surgery, valvular surgery, congenital heart disease in infants and young children, and major vascular surgery. · In the field of coronary artery disease, he was the first in Shenzhen to perform off-pump coronary artery bypass grafting using a serpentine sequential anastomosis with a single proximal anastomosis. · In the field of major vascular surgery, he was the first in the city to complete total aortic arch replacement with a frozen elephant trunk procedure, as well as endovascular stent implantation and artificial vascular graft replacement for thoracoabdominal aortic aneurysms and aortic dissections.