Belief Revision in the Process of "Observing Pulse and Signs, Knowing What Problem You Have, and Providing Treatment Accordingly"
“观其脉证，知犯何逆，随证治之”进程中的信念修正

Dynamic epistemic logic was used as a research method in the study of Guizhi decoction and its similar decoctions in order to analyze the logic of belief revision after receiving new information. It makes great sense to understand the syndrome differentiation and treatment process of "observing the pulse and signs, knowing what problem you have, and providing treatment accordingly" is a dynamic procedure. Information update is important to a doctor's belief revision. It reflects the result of treatment based on syndrome differentiation.