Shennong's Classic of Materia Medica - Vegetables (Top Grade)
Overall Paraphrase
This chapter covers five vegetable-type medicines of the top grade. The ancients believed these daily-edible vegetables possessed both health-preserving and therapeutic functions.
Malva Verticillata Seed (Dongkuizi): Sweet in taste, cold in nature. The ancients believed it could regulate the functions of the five viscera and six bowels, improve alternating chills and fever, and states of weakness and emaciation. It promotes urination and relieves five types of urinary obstruction (五癃 wǔ lóng—various urination disorders). With prolonged use, the ancients held that it would strengthen the bones, build muscle, lighten the body, and extend one's years. It grows on Mount Shaoshi and is harvested in the twelfth month.
Amaranth Seed (Xianshi): Sweet in taste, cold in nature. The ancients believed it could treat blue blindness (青盲 qīng máng—an eye condition where the eye appears normal but vision is impaired), brighten the eyes, expel pathogenic influences, promote urination and defecation, and relieve symptoms of chills and fever. With prolonged use, it increases strength and qi, reduces hunger, and lightens the body. Also known as Horse Amaranth (Mǎxiàn). It grows in Huaiyang and in fields, with leaves resembling those of the indigo plant. Harvested in the eleventh month.
Melon Stalk (Guadi): Bitter in taste, cold in nature. The ancients believed it primarily treats severe edema of the entire body, face, and limbs, causing dampness to descend and be expelled. It kills gu poison (蛊毒 gǔ dú—what the ancients considered a pathogenic agent caused by insect venom), and treats cough with qi counterflow, rapid breathing, and accumulation disorders in the chest and abdomen resulting from overconsumption of various melons and fruits. All these can be expelled through emesis or purging. It grows in level marshlands. Harvested on the seventh day of the seventh month, dried in the shade. Tao Hongjing held this to refer to sweet melon stalk.
Melon Seed (Guazi): Sweet in taste, neutral in nature. The ancients believed it could moisturize the skin, improve facial complexion, replenish qi and blood, and reduce hunger. With prolonged use, it lightens the body and delays aging. Also known as Water Spirit (Shuǐzhī). It grows in level marshlands. This refers to winter melon (wax gourd) seeds, harvested in the eighth month.
Bitter Herb (Kucai): Bitter in taste, cold in nature. The ancients believed it could dispel pathogenic qi from the five viscera, and treat loss of appetite without hunger, and gastric obstruction and stagnation. With prolonged use, it calms the spirit, replenishes qi and blood, sharpens hearing and eyesight, clarifies thinking, reduces drowsiness, lightens the body, and delays aging. Also known as Tu Grass (Tú cǎo) or Xuan (Xuǎn). It grows in mountain valleys and ravines. It does not wither in harsh winter. Harvested on the third day of the third month, dried in the shade.
🧠 Deep Understanding
Core Principles 💡
The common characteristic of these five medicines lies in the "unified origin of medicine and food" and the therapeutic approach of "sweet/cold clearing and draining":
- Sweet and cold nourishing: Malva verticillata seed, amaranth seed, and melon seed are all sweet in taste and cold in nature. Sweetness nourishes and relieves urgency; cold clears heat. This reflects the top-grade positioning of "nourishing life in response to Heaven"—using balanced, gentle properties to regulate the body rather than aggressive attack.
- Bitter and cold descending: Melon stalk and bitter herb are bitter and cold. Bitterness drains, dries, and firms; cold clears heat. The emetic action of melon stalk embodies the therapeutic principle of "guiding according to the situation" (因势利导 yīn shì lì dǎo)—when pathogens reside in the upper chest and abdomen, use the vomiting method to expel them from above, just as the Inner Classic states: "When [the disease] is high, expel it upward" (其高者，因而越之).
- Free flow as the key: Four of the five medicines involve promoting urination or both urination and defecation, reflecting the ancient concept of "taking unimpeded flow as supplementation" (以通为补 yǐ tōng wéi bǔ)—when waterways are unobstructed, damp turbidity does not arise; when bowel qi flows freely, stagnation does not accumulate.
- Top-grade positioning: All five medicines are listed as top grade, with "prolonged use lightens the body and extends years" serving as the hallmark phrase of top-grade medicines. This reflects the ancient medical philosophy of "treating before illness arises" (治未病 zhì wèi bìng)—nourishing through daily vegetables, maintaining bodily equilibrium through subtle, gradual influence.
Modern Understanding 🌟
- Malva verticillata seed: Rich in mucilage, with certain laxative and diuretic effects. Its claim of "strengthening bones and building muscle" partially aligns with modern understanding of plant proteins and trace elements, but "lightening the body and extending years" represents the ancients' idealized health-preservation expression without modern evidentiary support.
- Amaranth seed: Modern research shows amaranth plants contain relatively abundant protein, lysine, and various minerals, with certain nutritional value. The claim of "brightening the eyes" may relate to its nutrient content, but the treatment of blue blindness lacks rigorous clinical verification.
- Melon stalk: Contains cucurbitacin compounds. Modern pharmacological research confirms its potent emetic action and certain hepatoprotective activity, but it also possesses significant toxicity—improper use can cause serious adverse reactions. The ancient "emesis and purging" approach shares theoretical similarities with emetic detoxification, but the safe dosage is extremely difficult to control.
- Melon seed (wax gourd seed): Rich in oils and proteins. Its external use as a "facial cosmetic" aligns with modern principles of oil-based skin care; "benefiting qi and reducing hunger" can be understood as the satiety and energy provided by fats and proteins.
- Bitter herb: Contains bitter principles and flavonoids with gastrointestinal-stimulating and mild sedative effects, but the mechanism and efficacy of "sharpening awareness and reducing sleep" lack modern empirical evidence.
Health Preservation Insights ⚡
- Harvest in accordance with seasons 🌿: The ancients emphasized harvest timing (malva seed in the twelfth month, bitter herb on the third day of the third month, etc.), suggesting that the efficacy of food materials relates to growth rhythms. In modern life, choosing seasonal vegetables aligns better with natural patterns.
- Medicine and food share one source—value lies in balance 🍃: All five herbs in this chapter are vegetables with mild, balanced properties. The ancients used them as daily dietary nourishment rather than urgent remedies. This suggests that daily health maintenance should prioritize gentle, mild food materials, progressing gradually, and avoid harsh substances.
- The wisdom of free flow 🌊: Malva seed promotes urination; amaranth seed promotes urination and defecation. This reflects the health principle of "maintaining smooth elimination." Modern people who sit for prolonged periods and consume refined diets can benefit from moderate intake of fiber-rich foods (such as amaranth, malva, and other leafy greens) to support intestinal health.
- The ancient wisdom of bitter flavors 🌿: Bitter herb "calms the heart and benefits qi with prolonged use," reflecting the ancients' recognition of the "clearing the heart and descending fire" properties of bitterness. Modern diets generally contain insufficient bitter foods; moderate consumption of bitter vegetables (such as endive, bitter melon, etc.) helps diversify taste experiences and balance dietary structure.
📚 Related Knowledge
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Related Concepts:
- 五癃 (Five Urinary Obstructions) : Five types of urinary dysfunction involving impaired bladder qi transformation.
- 蛊毒 (Gu Poison) : A pathogenic agent the ancients believed was caused by insect venom. It may partially correspond to modern concepts of infectious or parasitic diseases, though the concepts are not equivalent.
- Emesis Method (吐法): One of the eight methods in Chinese medicine (diaphoresis, emesis, purging, harmonizing, warming, clearing, dispersing, supplementing), which expels pathogens from above through induced vomiting.
- Top-Grade Medicines (上品药): One of three grades in Shennong's Classic of Materia Medica—"the 120 top medicines serve as sovereigns, primarily nourishing life in response to Heaven." Most are non-toxic and suitable for prolonged use.
- Unified Origin of Medicine and Food (药食同源): Food and medicine share the same origin; many daily food ingredients possess dual properties of nourishment and therapy.
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Further Reading:
- Huangdi Nei Jing · Suwen · Zangqi Fashi Lun: "The five grains nourish, the five fruits assist, the five meats benefit, the five vegetables fulfill"—on the position of vegetables in dietary structure.
- Shennong's Classic of Materia Medica · Preface: The theoretical basis of the three-grade classification system.
- Compendium of Materia Medica · Vegetable Section: Li Shizhen's systematic compilation and elaboration on vegetable medicines.
- Jingui Yaolue · Food and Fruit Vegetable Taboos: Zhang Zhongjing's discourse on dietary taboos and illnesses caused by vegetable consumption.
This content is based on classical Traditional Chinese Medicine texts and is provided solely for cultural study and research purposes. It does not constitute any medical diagnosis, medication advice, or treatment recommendations. If you feel unwell, please seek medical attention promptly.
