The present study examined internal environment where the size of internal organs (廳服大小) of Taesoeumyang persons (太少陰陽人) is decided focused on nature and emotion (性情), taking note that there is a difference between the parts triggering the rise and fall (升降) of the energy of sorrow, anger, joy and pleasure (哀怒喜樂之氣) of nature and emotion(性情) and the parts expressing the results. Because nature energy is incoming energy (順動之氣), it infuses energy to parts where the energy of sorrow, anger, joy and pleasure reaches and, as a result, forms relatively large-size organs (偏大之臟). When the energy of the four internal organs is produced, the soul, spirit, mind and life (神靈魂?) of the internal organs, which are triggered by outgoing energy, are consumed and as a result emotion is produced at parts where the energy of sorrow, anger, joy and pleasure reaches. It forms relatively small-size organs (偏小之臟). This study examined the process, focused on the direction of the energy of the energy of sorrow, anger, joy and pleasure moving up straight, moving up diagonally, moving down diagonally and moving down straight.