Hello! Do you want to ask why Zhang Huiyong is so difficult to hang up? Zhang Huiyong is difficult to hang up because Zhang Huiyong is an expert with limited time and a large number of people. Zhang Huiyong, chief physician, professor, master tutor, disciple of Li Yuqi, master of traditional Chinese medicine, is currently the deputy director of hematology department of the affiliated hospital of Liaoning University of Traditional Chinese Medicine.