Prof. ZHU Wen-feng had great achievement in the area of TCM diagnostics. He was the co-author of my book "modern TCM clinical diagnostics". He had very distinct academ- ic characters: a) he was open and had good compatibility of the East and the West to promote the modernization of TCM; b) he established a entire differentiation system of sign, disease and syndrome, which is capable for clinical application; c) he put great efforts on the standardization of syndrome and become the expert in this area; d) he worked on the quantification o...