Wang Yangming, a Confucius sage of the Ming Dynasty, had a turbulent life and got enlightenment at Longchang of Kweichow. He presented his own views of ”investigating things and extending knowledge to the utmost” with emphasis on ”returning to self-consciousness” and high value on ”Great Learning” which is to publish righteousness that are of light, so that all can understand it; to treat people as family members; and aim at perfect goodness. This author found that Mr. Yangming not only venerated Confucius and Mencius but also engaged in the study of Buddhist and Taoist philosophy, which superficially appears sophisticated to make one feel at the very beginning that he was now Confucianism, now Buddhism and now Taoism, leaping among these three systems. However, when correlating his philosophy with the Practice Coordinate Graphic by Professor Liang NaiChung and making some adjustments, one would discover that there is a natural knowledge system developed by Mr. Yangming. Making a comparison between the new Practice Coordinates Graphic by Professor Liang and the proverbs from The Record of Teaching and Practising by Mr. Yangming, one would suddenly realizes the Yangming's Philosophy of Mind, which the author transforms as a Practice Coordinate Graphic with Y axis standing for the extension of self-nature and X axis for the extension of Dharma-nature. The sequences of the extension of selfnature are to make one's mind right, intention pure, conscience good, and those of the extension of Dharma-nature are rectifying the mind, regulating the family and giving peace to the country. When both of self-nature and Dharma-nature reach an utmost development, one is in the status of ultimate goodness.