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Anger is restrained by fear; excessive joy injures the Heart, and fear can restrain joy; excessive thought injures the Spleen, and anger can restrain thought; excessive sorrow injures the Lungs, and joy can restrain sorrow; excessive fear injures the Kidneys, and thought can restrain fear. This constitutes the mutual restraint among the five emotional natures. The *Suwen: Jutong Lun* (Treatise on Pain) states: Anger causes Qi to ascend; joy causes Qi to slacken; grief causes Qi to dissipate; fear causes Qi to descend; shock causes Qi to become disordered; labor causes Qi to be consumed; thought causes Qi to knot. These are the pathogenic mechanisms of Qi associated with the five emotional natures. The *Lingshu: Benshen* (Spiritual Pivot: Original Spirit) states: The Liver stores Blood, in which Hun (Ethereal Soul) resides; deficiency leads to fear, while excess leads to anger; the Spleen stores Ying (Nutritive Qi), in which Yi (Intellect) resides; deficiency results in the inability to use the four limbs and instability of the Five Zang organs, while excess manifests as abdominal distension and difficulty in urination and defecation; the Heart stores Mai (Vessels/Pulse), in which Shen (Spirit) resides; deficiency leads to sadness, while excess leads to incessant laughter; the Lungs store Qi, in which Po (Corporeal Soul) resides; deficiency results in nasal congestion and obstruction, shortness of breath, while excess manifests as wheezing and gasping, chest fullness requiring仰息 (breathing with the head tilted back); the Kidneys store Jing (Essence), in which Zhi (Willpower) resides; deficiency leads to jue (cold extremities/fainting), while excess manifests as distension. These describe the deficiency and excess patterns of diseases caused by the five emotional natures. The Spleen, Lungs, and Kidneys do not explicitly discuss spirit-related diseases because they are already encompassed within the pathological descriptions of the Liver and Heart, from which they can be inferred. It further states: If the Heart is subjected to fright, terror, and overthinking, it injures the Shen; when Shen is injured, one experiences fear and loss of self-control, muscle wasting, withered hair, and a sallow complexion, leading to death in winter; if the Spleen is burdened with unresolved sorrow, it injures the Yi; when Yi is injured, thinking becomes chaotic, the four limbs cannot be lifted, with withered hair and a sallow complexion, leading to death in spring; if the Liver is moved by profound grief affecting the interior, it injures the Hun; when Hun is injured, one becomes manic and lacks clarity, lacking clarity means one dares not face others properly, leading to retraction of the genitals and tendon contraction, stiffness of the hypochondriac bones preventing movement, withered hair, and a sallow complexion, leading to death in autumn; if the Lungs are subjected to boundless joy and pleasure, it injures the Po; when Po is injured, one becomes manic, acting as if others do not exist, with scorched skin and leather, withered hair, and a sallow complexion, leading to death in summer; unceasing rage in the Kidneys injures the Zhi; when Zhi is injured