Yang Jianfeng, male, deputy chief physician, studied at Xuzhou Medical College from 1989 to 1994, worked at Xuzhou First People's Hospital in August 1994, and has been working clinically in the Department of Cardiology since 1996, engaged in interventional cardiology I have been working for 13 years. From January to July 2005, I studied pacemaker placement and coronary heart disease PCI at the Department of Cardiology, Nanjing Gulou Hospital. In this hospital, I mainly engaged in radiofrequency ablation of supraventricular tachycardia and pacemaker placement.