Really. It is true that Zhang Peiying in the column of Proverbs of Materia Medica is a medical practitioner. Zhang Peiying's main practice institution is Taiyuan Kanglian Health Examination Clinic, and its practice scope is ophthalmology and otolaryngology. There are five volumes published in the Series of Good Prescriptions for Diabetes in Chinese Medicine: 16 Famous Prescriptions for Diabetes, 17 Effective Prescriptions for Diabetes, 20 Prescriptions for Diabetes Treatment, 8 Self-made Diabetes Ointment and 3 Prescriptions for Diabetes Treatment with Tea.