Dr. Zhijiang Chen's Evaluation Skill contains three parts: eye - logy, nail observation, and tongues and coating observation. The eye - ology includes iridology, pupils, crystalline lens, and sclera - ology. This information is based on western iridology in combination with Chinese herbal remedies; this becomes valuable skills for Chinese herbalists and doctors. The eye - ology provides internal and external accumulation of pathogen heat and dryness, aging heat and dryness, and even prenatal pathogen heat and dryness indications. The nail observation is according to Dr. Zhu's information in combination with the author's own experience; the information includes basic nail physiology, abnormal nail shape, surface, property, moon, color, margin condition and indications. The tongue and coating observation is according to history and current information, which includes tongue body and coating of shape, color, property, and situation. The author organized the information to fit the actual practice condition. This book is easy to understand and a good tool for practitioners; it will enhance the practitioner's evaluation skills to collect the appropriate information for case analysis, and will lead the practitioner to make the right decisions for the solution and remedies.