Previous investigators have often looked into the ways people of the Sung dynasty elicited images of the saints and derived consolation from the writings of Confucius and Yen Hui (顏回) during times of hardship. Apart from these perspectives, Chu His extended his study to include investigations of the Confucian disciples. Though the disciples’ excessive interpretations and readings did results in a certain bias and tendentiousness, one can examine the development of Confucianism by means of their study of the history of Confucianism, and analyze their competence in re-defining Mencius, the ancient book that recorded the talks and conduct of Confucius. Since Chu His, the rationale underlying The four Books was formed and the Great Learning (大學), The Analects Of Confucius (論語), Mencius (孟子), and The Doctrine Of The Mean (中庸) were first interconnected. The “Confucian orthodoxy” among the saints was passed on, giving Confucianism a new way of thought. In order to arrive at a clear picture of how Confucianism was transformed, the present paper brings together the discussions on the Confucian pupils in The Collected Commentaries of The Four Books (四書章句集注) and reviews the criticism which has long been related to ”devaluing the saints’ sect”. the paper aims to examine and study how Chu His classified “Perspicuity” (穎悟) and “Sincerity” (篤實) and traces how “Confucian orthodoxy” was passed on, and posits its ultimate purpose of restoring the thought of Chu His to its rightful position.