 One example of Neo-Confucians reformulating ideas and/or introspective practices from Buddhism took the form of the often practiced, albeit somewhat controversial, method of meditation known as jingzuo (Japanese: seiza), or “quiet-sitting.” With this practice, Neo-Confucians developed an alternative to the popular Chan (Zen) form of meditation known as zuochan (Japanese: zazen). The latter was meant to help the practitioner intuit the essential emptiness of the ego, also understood as intuiting their Buddha nature, as well as the emptiness or insubstantiality of all things. Neo-Confucians, however, emphasized that the introspective moments achieved during quiet-sitting would lead to a comprehensive enlightenment wherein the person realized clearly the essential goodness of their original nature as moral principle and its simultaneous identity with the principle informing all things in the universe. This understanding of the ethical unity of the self and world was the ground, as Neo-Confucians understood quiet-sitting, not for withdrawal or inactivity but instead for a dynamic engagement with the world.