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Luo Longsheng stated in his medical writings: The *Abdominal Discussion* chapter of the *Huangdi Neijing* (Yellow Emperor's Inner Canon) records: "There is a disease characterized by distension and fullness in the chest and hypochondrium, which interferes with eating. Upon onset, the patient first perceives a fishy or foul odor, secretes clear fluid, expectorates blood-stained saliva, experiences cold limbs, dizziness, and frequent bleeding from both the upper and lower orifices. This disease is named 'Blood Depletion' (Xue Ku). It arises from significant blood loss in youth, or from sexual intercourse while intoxicated, leading to kidney and liver deficiency. The Liver stores Blood and receives the Qi of Heaven One for nourishment and flourishing; its meridian passes upward through the diaphragm and spreads over the hypochondrium. If blood is lost and essence is depleted, the Liver Qi is injured, and Liver Blood becomes exhausted, failing to provide proper nourishment. [Regarding symptoms of chest and hypochondriac fullness, people often employ methods to suppress the Liver, not realizing that patients with Blood Depletion require nourishment of Liver Blood. One must recognize this.] When Liver disease transmits to the Spleen, it hinders digestion and causes fishy odors and clear secretions. If Liver disease allows Lung Metal to overcome it, symptoms such as expectoration of blood, cold limbs, dizziness, and frequent bleeding occur; all these are signs of Liver injury affecting the Blood. However, the treatment method should focus on strengthening Earth (Spleen)."

According to Li Chen (Zhai), regarding the aforementioned symptoms: If they result from improper diet and lifestyle causing Spleen and Stomach deficiency, one should nourish the source of transformation and transportation. If Spleen Earth deficiency and cold prevent blood generation, one should tonify the Fire of the Gate of Vitality (Ming Men). If dry-hot substances have been ingested, causing internal fire stagnation and consumption of body fluids, one should clear heat and nourish blood. If Spleen and Stomach damage leads to emptiness of Qi and Blood, one should tonify the Middle and benefit Qi. If Stomach heat and excessive hunger consume blood, one should clear the fire of the Spleen and Stomach. If constipation occurs with clear and profuse urination and amenorrhea, one should tonify the Heart and nourish blood. These are the general principles for treating Blood Depletion, primarily focusing on nurturing the True Yuan (Original Energy). If harsh bitter-cold purgatives are indiscriminately used to promote menstruation as a quick fix, one fails to realize that increased flow leads to greater obstruction, destroying the source of life until conditions like wind exhaustion or rising abdominal masses (Ben Teng) arise, making treatment difficult.

Kou Zongshi stated: Human life is based on Qi and Blood; therefore, no disease occurs without first damaging Qi and Blood. If young men and women harbor obsessive thoughts and engage in excessive mental labor, it often leads to consumptive disorders. In men, the spirit and complexion scatter first; in women, menstruation ceases first. Worry and anxiety injure the Heart, causing blood to reverse and become exhausted, scattering the spirit and complexion, and stopping menstruation. Furthermore, Heart disease fails to nourish the Spleen, leading to anorexia. Spleen deficiency causes Lung Metal to be deficient, resulting in cough. Exhaustion of Kidney Water means Wood Qi lacks nourishment, leading to dry and flaccid limbs, irritability, scorched hair, and weak sinews and bones. If the pathology spreads through all five Zang organs, death ensues. If the patient can change their mindset and receive medicinal support, life may be preserved.

According to the classics: When grains enter the Stomach, their dregs, fluids, and Zong Qi (Gathering Qi) divide into three streams. Thus, Zong Qi accumulates in the chest, emerges from the throat, penetrates the Heart and Lungs, and governs respiration. Ying Qi (Nutritive Qi) secretes fluids, injects them into the vessels, transforms them into blood, and nourishes the four extremities internally, while nourishing the five Zang and six Fu organs. If bitter-cold medicines are taken, further injuring Stomach Qi, it will inevitably lead to fatal consequences.