Heart Qi s the fundamental force for the functioning of the Traditional Chinese Herbal Theory for the heart system. Heart Qi propels the Blood, houses and nourishes the Spirit, and maintains the activity of the body throughout life. Heart Qi corresponds to the rhythm of the Heart. Heart Qi moderates the Spirit that resides within the Heart. When Qi is vacuous the Heart Spirit is deprived of nourishment and this can cause a disturbance of the Spirit.Thus, this pattern is mostly about Heart Qi affecting the Heart.