In this paper, I employ the three conditions of Christine Korsgaard’s theory of sources of normativity for the analysis of Hsün Tzu’s ethics. Since Confucius has established that ren is the moral source of rituals (li) and musical operas (yue) that is, all kinds of mundane values and the mind of ren is the source of moral normativity. Hence, Confucian ethics is a kind of internalism. According to Hsün Tzu, human nature, human mind and Heaven are not the source of moral normativity. Li and I as social constitutions are created by the special talent of the sage king. Common people could not share such creation but follow them. Hence, for the common folks, moral principles are external guiding principles and need be learned. Therefore, Hsün Tzu’s ethics is externalism. As Mencius takes our unbearable mind of other’s sufferings as the source of morality, his is also internalism and thus a direct heir of Confucius. Both Confucius and Mencius theories are internalism and I name them as a kind of moral consciousness internalism to show the difference with Kant’s and Hume’s philosophies.