Based on my a-decade researches of the moral philosophy of the "mode of Chen-Zhu," I investigate and remark on Tang Junyi's, Mou Zongsan's and Yu Ying-shih's respective perspectives of the similarities and dissimilarities between Zhu Xi's and Lu Jiuyuan's moral theories. In addition, to benefit from one of Kant's important theses- freedom and unconditional practical law reciprocally imply each other, and our cognition of unconditional practice must start from unconditional law-, I offer a justification that it is theoretically feasible to bridge the moral theories between the "mode of Chen-Zhu" and the "mode of Lu-Wang." Therefore, both modes, in Confucian tradition, are justifiable and indispensable moral theories.