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Born from the qi of early spring and possessing the natures of Metal, Water, and Wood, its flavor is pungent and slightly sour, its temperature is warm, and it is non-toxic. Raw, it is pungent and promotes blood circulation; cooked, it is sweet and tonifies the middle jiao. Pungency can dissipate nodules, warmth can promote circulation, combined with slight sourness. Thus, it enters the Liver channel and governs blood, capable of promoting the flow of any stagnant blood. It is a herb that moves qi within the blood. The Heart governs the blood vessels and specifically regulates the blood aspect, hence it is said: entering the Heart and intestines/stomach, once stasis is removed, qi and blood become smooth, the five zang organs are peaceful, and stomach heat is eliminated. Patients often suffer from depressed qi. Generally, human qi and blood benefit from smoothness and harmony; leek's nature is both moving and tonifying, hence it is said to be most beneficial for patients. Its ability to warm the knees, eliminate masses, stop leukorrhea, and arrest enuresis all stem from its power to warm the middle and tonify simultaneously. Leek seeds (Jiu Zi) are pungent, sweet, and warm, non-toxic, primarily treating nocturnal seminal emission and hematuria. This is because leek enters the Foot Jueyin (Liver) and Foot Shaoyin (Kidney) channels. The Kidney governs closure and storage, while the Liver governs dispersion and drainage. The *Classic* states: Disease of the Foot Jueyin manifests as urinary incontinence and white discharge (leukorrhea/spermatorrhea). Leek seeds enter the Jueyin channel, using their sweet-warm nature to tonify the Liver and address insufficiency of the Gate of Vitality (Mingmen). Hence, they are used to treat these conditions. A poor elderly man suffered from dysphagia (Yige), vomiting immediately after eating, with stabbing pain in the chest. Someone advised him to take leek juice mixed with a small amount of salt and plum brine, sipping it slowly. As he gradually increased the dose, he suddenly vomited several sheng of thick phlegm and was cured. This follows the principle of Zhang Zhongjing using Allium macrostemon (Xiebai) to treat chest bi (obstruction), both taking advantage of the pungent-warm nature to dissipate phlegm-fluids and evil blood in the stomach and chest.

Leek, although commonly used as a vegetable, is most beneficial for patients. Eaten in spring, it is fragrant; eaten in summer, it has an offensive odor. It warms the middle, directs qi downward, enters the Heart, benefits yang, eliminates all types of blood stasis, treats throat obstruction/qi stagnation, warms the knees, harmonizes the zang-fu organs, eliminates cold masses in the chest and abdomen, stops urethral leukorrhea and seminal emission, pacifies the five zang organs, and clears stomach heat. When mashed into a paste with a little salt, applied frequently to snake or dog bites/poison, it brings immediate safety. For blood stasis caused by beating with a stick, applying thinly and patting continuously disperses it. Boiled fresh with crucian carp, it stops acute diarrhea. Boiled with beef, it causes the growth of tapeworms (Cunbai Chong). Consumed with honey, it can be fatal, which is verified. Eating it after illness induces drowsiness; eating it after alcohol intoxication clouds the spirit. Long-term excessive consumption dims the eyes. Juice squeezed from the roots can be added to decoctions, clearing the stomach cavity and showing special efficacy for blood stasis, providing rapid relief for chest/diaphragm qi knotting, opening wind-stroke aphasia, and eliminating malignant abdominal distension. There is also "jiuhuang" (yellow leeks), which are extremely tender shoots grown in soil/fertilizer before emerging. Made into pickles, they are palatable and prized for sacrificial offerings, but do not benefit the body and can severely stagnate qi, because their qi is still depressed and unexpanded. Leek seeds stop seminal turbidity and leakage, assist yang, stop leukorrhea, tonify the Liver and Kidneys, and warm the waist and knees.