Q: The birth and death years of Hua Tuo, Zhang Zhongjing and Guan Yu!

Hua tuo (about 145? -208), a physician at the end of the Eastern Han Dynasty, was a native of Pei Guoqiao (now Qiaocheng District, Bozhou City, Anhui Province). Hua Tuo, Dong Feng and Zhang Zhongjing (Zhang Ji) are also called "Jian 'an Three Magical Doctors". Zhang Zhongjing, a famous doctor in the late Eastern Han Dynasty, was called a medical sage. According to legend, it is filial piety and Changsha magistrate, so it is called Zhang Changsha. Zhang Zhongjing extensively collected medical prescriptions and wrote the masterpiece Treatise on Febrile Diseases handed down from ancient times. The established principle of syndrome differentiation and treatment is the basic principle of TCM clinic and the soul of TCM. Guan Yu (? -220) this word is immortal, and later it was changed to Yunchang, Hedong boundary (now Yuncheng, Shanxi). The famous soldier in the late Eastern Han Dynasty has been following Liu Bei since he assembled his troops in the village. He is one of the most trusted generals of Liu Bei.