The term is also known as “the heart houses the mind,” meaning that the heart governs both physiological and psychological activities of human body. Here, the “mind” (shén míng, 神明) refers to the higher nervous activities that are governed by the heart including spirit, consciousness, and thinking. “The heart governs the mind” denotes two levels of meaning: 1) the heart’s coordination of the physiological functions of all organs and tissues in human body; and 2) the heart’s domination of cognition, emotions, and volitional activities. Therefore, the states of spirit, consciousness, thinking, sleep, and emotions are all related to the function of the heart in storing the mind. If the heart is in its normal physiological state, such manifestations can be observed as full vitality, sound consciousness, quick response, agile mind, and sound sleep.