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Baijiao (Deer Antler Glue), also known as Lujiaojiao, is derived from the deer, a mythical beast belonging to pure Yang substances. It treats emaciation and weakness caused by consumptive injuries. It is an excellent medicine for tonifying the Kidney, replenishing essence, warming the waist and knees, nourishing the blood vessels, strengthening sinews and bones, and assisting the functioning of Yang Qi. Its essence concentrates in the horns; glue is made by boiling the horns. It has a sweet taste and warm nature, and is non-toxic. It enters the Foot Jueyin Liver Meridian, Foot Shaoyin Kidney Meridian, Hand Shaoyin Heart Meridian, and Hand Jueyin Pericardium Meridian. The *Classic* states: "Excessive labor leads to panting and sweating, with essence and Qi dissipating internally and externally, thereby depleting Middle Qi (Spleen/Stomach Qi)." Therefore, those engaged in heavy labor suffer damage to their Middle Qi and meridians, resulting in limb disorders, excessive sweating, hematemesis (vomiting blood), or hematochezia (blood in stool). These are all conditions where the Liver and Heart are affected. This medicine, being sweet and warm, enters these two meridians and can tonify Middle Qi; thus, meridian damage harmonizes, limbs move freely, bleeding stops naturally, and sweating ceases. Fractures and traumatic injuries cause blood stasis leading to disease. The sweet and warm nature enters the Blood level to promote circulation while simultaneously providing tonification, so fractures and traumatic injuries heal spontaneously. For women with amenorrhea and infertility, as well as metrorrhagia and leukorrhea, restless fetus, lower back pain, and emaciation, these are signs of Blood deficiency and insufficiency of the Liver and Kidney. Warming the Liver, tonifying the Kidney, and benefiting Blood will cause these symptoms to recede, allowing the fetus to be nourished properly. As Blood and Qi generate and True Yang becomes sufficient, long-term consumption leads to a light body and longevity. It additionally treats hematuria, spermatorrhea, red swelling and toxicity of sores, and chronic leukorrhea. Long-term use by women enables conception, all due to its rich flavor and powerful tonifying strength.

Baijiao primarily treats internal injury and consumptive exhaustion, lower back pain with emaciation, tonifies Middle Qi, treats female amenorrhea and infertility, relieves pain and calms the fetus, treats hematemesis and hematochezia, continuous metrorrhagia, soreness and pain in the four limbs, excessive sweating and discharge, fractures and traumatic injuries. Long-term use results in a light body and longevity.

The rhinoceros is also a divine beast. The finest part of its horn is named "Tongtian" (Reaching Heaven); it glows at night, can open wooden doors to dispel evil, and causes birds and beasts to flee in terror upon seeing it. It has a bitter and salty taste, and a great cold nature. It enters the Foot Yangming Stomach Meridian and the Hand Shaoyin Heart Meridian. The Yangming Meridian is the Sea of Water and Grain, accepting all things; its mouth and nose are the orifices of Yangming. Most toxic pathogens enter through the mouth and nose. The spiritual property of rhinoceros horn, being bitter and cold, specifically enters the Yangming Meridian to eliminate various heat toxins. Once the pathogenic heat is removed, the Heart Meridian becomes clear. Thus, it treats delirious speech, heat-toxic carbuncles, irritability, and fright; it settles the Liver, brightens the eyes, and treats epistaxis, hematemesis, and bloody stools. In cases of Cold Damage with blood retention, jaundice, macules, and blackened/indented smallpox lesions, it is used for its ability to enter the Stomach and Heart, disperse pathogens, clear heat, cool Blood, and detoxify. To make fine powder, sawdust should be placed in one's bosom overnight, then pounded; it turns to powder instantly. Humans, being the spirit of all things, can subdue it. Moreover, the yin-cold quality melts like ice when warmed by Yang harmony. When harvesting, the tip of the rhino horn and the velvet of the deer antler are taken because their essence and Qi concentrate there. Horns used for crafting are often steamed and are unsuitable for medicinal use.

Rhinoceros horn eliminates all toxins, relieves irritability and heat, treats Cold Damage and warm epidemics, all carbuncles and swellings, settles the Liver, brightens the eyes, and calms the Spirit. However, as an extremely cold and spiritual substance, entering the Heart to cool Blood and entering the Stomach to disperse pathogens is correct. But using it for early-stage blood-heat smallpox is incorrect, because smallpox relies on Fire properties to manifest; extreme cold would cause it to remain trapped and unemerged. Some claim it has ascending and dispersing functions, which is likely inaccurate. Danxi stated: "Rhinoceros horn belongs to Yang, and its nature is good at moving and dispersing, more so than other horns." It is used after smallpox to disperse residual toxins. However, one must not ignore that in cases of Blood deficiency with dry-heat, its use brings immediate disaster.

Main indications (integrated with smallpox discussion): Clears Heart Fire, calms the Spirit, stops irritability, settles the Liver, brightens the eyes, resolves heat toxins, clears Blood Heat. Grinding and taking it is particularly effective. Danxi claimed it belongs to Yang and can disperse residual toxins after smallpox. It is contraindicated for Blood deficiency. However, since all pain, itching, sores, and ulcers belong to Heart Fire, using it initially risks trapping cold inside, while using it later risks drawing toxins into the Heart. Zhang Jingyue often substitutes Lingyangjiao (Antelope Horn) with miraculous effect. This is because Lingyangjiao clears the Lung and Liver, unlike Rhinoceros horn which is bitter-cold and directly enters the Heart Meridian to cool Blood.

Note: Rhinoceros horn consumes the toxins of hundreds of herbs, thus it can resolve hundred toxins. However, its great cold nature inevitably damages Stomach Qi. Pregnant women consuming it in excess may abort the fetus.