得土气以生，味甘，温，微寒，无毒，入足厥阴经。厥阴为风木之脏，开窍于目，
风热乘肝，则肝血虚而目为之病。此药温能散风，寒能除热，甘能补血，肝气和则目疾
瘳也。用汤浸去皮，尖劈作两片，用芒硝木通通草同煎，一伏时取出研膏入。
蕤核，专治眼科，消上下泡，风肿烂弦，除左右 热障 肉，退火止泪，益水生
光。退翳膜之赤筋，及赤肿 烂，并主心腹邪结气，及结痰痞气。
禀天地至阴之气，故其木凌冬不凋，又名冬青子。味苦甘寒，气平，无毒。气薄味
浓，阴中之阴降也，乃凉血益血之药。入足少阴经。夫少阴为藏经之脏，人身之根本
虚，则五脏虽无病，而亦不安百病丛生矣。《经》曰∶“精不足者补之以味”，盖肾本寒，
而为作强之官，虚则热而软，故其性欲竖，急食苦以坚之，此药味气俱阴，除热补精，
味苦入肾，正遂其欲坚之性耳，肾气即实，则五脏也安，须发黑而眼目明，百疾去而身
肥健矣。但禀性阴盛人，及脾寒作泻者，忌服之。
女贞实，照方精制，黑须发，明目强筋，力补中，安五脏，除百病，养精神，多
服补血去风，久服健身不老。虫白蜡，生肌止血，定痛接骨，续筋补虚，同合欢皮煎，
入长肉膏神效。
《简便方》治虚损百病，久服须白再黑。返老转童，用女贞实十月上巳日收，阴干，
用时以酒浸一日，蒸透晒干，一斤四两旱莲草，五月收阴干，十两为末，桑椹子四月收
阴干，十两为末，炼蜜丸如梧桐子大，每服七八十丸，淡盐汤下。若四月收，桑椹捣汁
和药，七月收。旱莲草捣汁和药。即减蜜之半矣。
按∶冬青子，禀天地至阴之气，性偏阴寒，若脾胃虚寒，久服必至腹痛作泻。
（蕤核）汲取了土的生气，味道甘甜，性温而微寒，无毒，归入足厥阴肝经。肝属于风木之脏，开窍于眼睛，如果风热侵袭肝脏，就会导致肝血亏虚从而引发眼病。此药性温能疏散风邪，性寒能清除热邪，味甘能补益血液，肝气调和则眼疾痊愈。使用时用汤剂浸泡去除外皮，将尖端劈成两半，与芒硝、木通、通草一同煎煮，经过一个时辰（约12小时）后取出研磨成膏加入方中。
蕤核专门用于治疗眼科疾病，消除上下眼睑的泡肿，治疗风邪引起的红肿及眼睑边缘溃烂，去除左右眼内的翳障和息肉，退火止泪，滋养肾水以明目，消退角膜上的赤色筋脉以及红肿溃烂，同时也主治心腹部的邪气结聚之气，以及痰凝痞块之气。
（女贞实）禀受了天地间至阴之气，所以其树木在冬天也不凋谢，又名冬青子。味道苦甘而性寒，气平，无毒。其气薄味浓，属于阴中之阴，具有沉降作用，是凉血益血的药物。归入足少阴肾经。肾是藏精之脏，是人身的根本，如果肾虚，即使五脏其他方面没有病变，身体也会不安稳，导致百病丛生。《黄帝内经》说：“精气不足的，要用厚味的药物来补益。”因为肾本属寒，作为作强之官（指精力充沛、动作强劲），肾虚时会出现虚热和痿软，性欲异常亢进，此时急需食用苦味药物来坚固肾气。此药气味均属阴，能除热补精，味苦入肾，正符合其坚固肾气的特性。肾气充实，则五脏安宁，须发变黑，眼目明亮，百病去除，身体肥健。但是，禀赋阴盛之人，以及脾胃虚寒导致腹泻的人，忌服此药。
女贞实，按照处方精细加工，能使黑白头发转黑，明目强筋，大力补益中气，安顿五脏，去除百病，养护精神，长期服用可补血祛风，久服能强身健体延缓衰老。虫白蜡，能生肌止血，定痛接骨，续筋补虚，与合欢皮同煎，加入生肌长肉的膏药中效果神奇。
《简便方》治疗虚损导致的各种疾病，长期服用可使白发变黑。欲达返老还童之效，需在农历十月上巳日采集女贞实，阴干；用时用酒浸泡一天，蒸透后晒干。取一斤四两旱莲草，五月采集阴干，研为粉末；桑椹子四月采集阴干，研为粉末。用炼蜜制成梧桐子大小的丸药，每次服用七八十丸，用淡盐汤送服。如果在四月采集桑椹，可将桑椹捣汁调和药粉；七月采集旱莲草，将旱莲草捣汁调和药粉。这样可以将蜂蜜的用量减半。
(Ruihe) Absorbs the vital energy of Earth, with a sweet taste, warm and slightly cold nature, non-toxic, entering the Foot Jueyin (Liver) Meridian. The Liver is the organ of Wind-Wood, opening into the eyes. When wind-heat attacks the Liver, it causes deficiency of Liver Blood, leading to eye diseases. This herb's warmth can disperse wind, its coldness can eliminate heat, and its sweetness can nourish blood; when Liver Qi harmonizes, eye ailments are cured. For use, soak in decoction, remove the skin, split the tip into two halves, and decoct together with Mangxiao (Natrii Sulfas), Mutong (Akebiae Caulis), and Tongcao (Tetrapanacis Medulla). After one *fu* (approx. 12 hours), remove and grind into a paste to add to the formula.
Ruihe specializes in ophthalmology, eliminating swellings on the upper and lower eyelids, treating wind-induced redness and marginal blepharitis, removing nebulae and polyps from the eyes, reducing fire and stopping tearing, nourishing Kidney Water to brighten vision, clearing red filaments on the cornea, and addressing redness, swelling, and ulceration. It also treats pathological qi accumulation in the chest and abdomen, as well as phlegm stagnation and epigastric fullness.
(Nvzhenzi) Possesses the supreme Yin energy of Heaven and Earth, hence its tree does not shed leaves in winter, also known as Dongqingzi. It has a bitter and sweet taste, cold nature, and neutral qi, non-toxic. Its qi is thin while its flavor is strong, representing Yin within Yin, possessing descending properties; it is an herb that cools blood and nourishes blood. It enters the Foot Shaoyin (Kidney) Meridian. The Kidney is the organ storing Essence, the root of the human body. If Kidney Essence is deficient, even if the Five Zang organs have no other pathology, the body will be unstable, giving rise to myriad diseases. The *Classic* states: "For insufficiency of Essence, tonify with substantial flavors." Since the Kidney is inherently cold and serves as the official of strength and vigor, deficiency leads to internal heat and flaccidity, often manifesting as excessive sexual desire. In such cases, bitter substances are urgently needed to consolidate the Kidney. This herb's qi and flavor are both Yin, eliminating heat and tonifying Essence. Bitter flavor enters the Kidney, perfectly aligning with its property to consolidate. Once Kidney Qi is solid, the Five Zang organs are at peace, hair and beard turn black, eyes become bright, myriad diseases depart, and the body becomes robust and healthy. However, individuals with a constitution of excess Yin, or those suffering from diarrhea due to Spleen-Stomach Cold, should avoid this herb.
Processed Nvzhenzi according to prescription turns gray hair black, brightens eyes, strengthens sinews, powerfully tonifies Middle Jiao Qi, calms the Five Zang organs, eliminates myriad diseases, and nourishes Spirit. Long-term consumption nourishes Blood and dispels wind; prolonged use promotes health and delays aging. Chongbaila (Beeswax) generates flesh, stops bleeding, alleviates pain, reconnects bones, repairs sinews, and tonifies deficiency. Decocted with Hehuanpi (Albiziae Cortex) and added to flesh-generating plasters, it yields miraculous effects.
The *Simple and Effective Prescriptions* treat various diseases arising from deficiency and exhaustion; long-term use turns white hair black again. To achieve rejuvenation, collect Nvzhenzi on the Shangsi day of the tenth lunar month, dry in shade. Soak in wine for one day before use, steam thoroughly, then dry in the sun. Take 1 jin 4 liang of Hanliancao (Ecliptae Herba), collected and dried in shade in the fifth lunar month, powdered; and Sangshenzhi (Mori Fructus), collected and dried in shade in the fourth lunar month, powdered. Form pills the size of mulberry seeds using refined honey. Take 70–80 pills per dose, washed down with light salt water. If Sangshenzhi is collected in April, crush it to extract juice and mix with the herbs; if Hanliancao is collected in July, crush it to extract juice and mix with the herbs. This reduces the amount of honey by half.
Note: Dongqingzi (Nvzhenzi) possesses the supreme Yin energy of Heaven and Earth, with a nature biased towards Yin-cold. If the Spleen and Stomach are deficient and cold, long-term consumption will inevitably lead to abdominal pain and diarrhea.