Traditional Chinese Medicine and Western Medicine1. The four diagnostic methods to observe and diagnose diseasesThe four diagnostic methods, named inspection, auscultation and olfaction , inquiry, and pulse-taking and palpation, refer to the four basic procedures used in diagnosing a disease, They are the presuppositions of correct differentiation and effective treatment in TCM. (1)Inspection is the first diagnostic procedure by which the physician may observe the patients vitality, co