Chuanshan philosophy is one of the recent focuses of academic research on Confucianism during the Song, Ming, and Qing dynasties. Although Tang Chun-i and Lao Sze-Kwang, two prominent Confucianism scholars, expressed divergent opinions regarding Chuanshan philosophy, few academic studies have analyzed their disagreement. Thus, this study discussed the different interpretations between the two scholars in terms of the examination by contemporary scholars on the Chuanshan concept regarding the experimental stage of moral existence. The following three research methods were employed. (1) The study gathered the discourses of Tang and Lao on Chuanshan philosophy. A preliminary comparison was conducted using the opposing arguments of the two scholars regarding their interpretation of Chuanshan philosophy. (2) Using the Complete Works of Chuanshan as a reference, we determined whether the arguments proposed by the two scholars matched the original source and clarified the key divergences between the scholars' interpretations. The second evaluation and description was then established regarding the scholars' interpretations of the fundamental research of Chuanshan philosophy. (03) Using Chuanshan philosophy research published after those of the two scholars for comparison, we discussed which scholars' interpretations were closer to those of the current research school on Chuanshan philosophy. This study used the aforementioned methods to analyze the interpretations of Tang and Lao on the Chuanshan concept regarding the experiential stage of moral existance.