The author Ke Qin is the author of four volumes of Shanghan Lun Notes, two volumes of "On Wings", and two volumes of "Fu Yi". The three books are collectively called Shanghan Laisu Ji. "Lunzhi" is reorganized based on six classical formulas; "Lunyi" is a comprehensive exposition; "Fuyi" is a prescription. Ke's explanation of Shanghan Lun was quite clear and his argument was quite detailed. He advocated that Shanghan Lun should include Zabing. And comorbid diseases are not only seen in the three yangs, but also commonly seen in the three yin or between the yin-yang meridians, etc., all of which are insightful.