If Chinese medicine doctors use classical prescriptions to treat difficult miscellaneous diseases

they should identify features of diseases from symptoms

find intrinsic relations from evolving rule of diseases

reject the dross and assimilate the fine essence and winnow truth from falsehood from complex symptoms

and choose the corresponding prescriptions according to the pathogenesis. Only attaching importance to studying and summarizing classical prescriptions for viscera diseases and the basic

representative

combined

and deuterogenic prescriptions of those classical prescriptions

can doctors better use classical prescriptions to treat many difficult miscellaneous diseases.