乃人脑盖骨，以脑为诸阳之会，而此骨则为一身众骨之主，味咸平无毒，取其同类
之气，以治传尸尸疰，辟恶散邪之需，然《读灵应仙书·药性》云∶纵借疗再造之缘，
先问人粉身碎骨之罪，药性虽存，仁人君子万勿用此，以伤天地，好生之德，且宁无同类相食之惨乎？
天灵盖，神功纵建，阴责实深，不敢轻陈，致遭天谴，戒之。
即妇人裤裆也。割取对阴处，烧末，服之。因居下体，得阴气胜，以类相从，其气
相感，以导邪热。故主阴阳易病，若童女裤，更佳。阴阳易者，人急时有病，后交
合，阴阳便即相着甚于本病，其候小便赤涩，寒热殊甚，头痛腰痛，耳鸣眼花，服此
便得通利，阴头微肿则愈。若女患阳易，须男子裤，若男患阴易。须妇人裤，取阴阳即
易之病，即以阴阳之物，治之。月经布，月经谓之天癸者，乃天一所生之水也，上应太
阴下应海潮，月有盈亏，潮有朝汐，故月事一月一行，与之相符也，其味咸，咸为水
化，热毒得水则解，故能解极毒之箭毒也。女劳复者，热病新瘥之后，交感而得其症，
发热烦躁，少腹阴囊牵引而痛，或卵缩入腹，腹痛欲死，盖前病余热未除，阴精复
损。故有是症，月水乃阴有阳之物，能补阴除热，故主之也。金疮血出不止，及虎野狼伤
疮，并男子阴疮，因不忌月事行房，阴物溃烂。用室女血，纳瓦上烧存性为末，麻油调
敷，皆血分受伤为病，以类相从补其不足也。童女首经名红铅，能回垂绝之阳，如女
子自受胎时算，至十四岁足共积五千四百之期，即于是日是时，经至者此为正鼎，其经
为上药，用法招摄若于经将至时真气先到，采入身中，名得大药，可以接命，即《首楞
经》所载，精仙是也。绝非入炉交感。亦非情想得通，亦非口服渣质，故亦成仙道耳。
萧子真云∶一等旁门性好淫，强阳复去采他阴，口含天癸称为药，似恁洳沮枉用心。此
言金丹大道，惟虚极静笃，采先天祖气而已。且不着子，四大安可求，于渣质哉，服
红铅而热极者，惟童便乳汁可以解之。
裤裆汁，得童男女者力强，善治阴阳易证，烧灰存性，研末汤吞，女患须男，男患
觅女，月经布烧灰，解药箭毒如神，中伤几死，服即回生，并治女劳复亦效。红铅，坎
宫一点，无端堕落尘寰，水里真金，有法收来接命。
这是人的头盖骨。因为脑是诸阳经汇聚之处，而这块骨头则是全身骨骼的主宰。其味咸，性平，无毒。取其同类相求之气，用于治疗传尸（指由痨虫引起的慢性消耗性疾病）、尸疰（一种具有传染性的痨病），以及驱散邪气、辟除恶毒的需求。然而，《读灵应仙书·药性》中说：纵然借它来治疗重病的机缘，也要先问自己是否有粉身碎骨的罪过。虽然药物性质尚存，但仁人君子千万不要使用此物，以免伤害天地好生之德，况且难道没有同类相食的惨状吗？天灵盖，即便建立了神功，阴间的责罚其实很深，不敢轻易陈述，以免遭受天谴，务必戒慎。
即妇女的裤裆。割取对应外阴的部分，烧成炭末，服用。因为它位于身体下部，得阴气较盛，以类相从的原理，其气相互感应，从而引导体内的邪热排出。因此主治阴阳易病（指大病初愈后因房事导致阴阳之气错乱交接的疾病）。如果是处女的裤裆，效果更佳。所谓阴阳易，是指人在急症时有病，后来进行性交，阴阳之气便立即相互沾染，比原来的病症更严重。其症状表现为小便赤红涩痛，寒热交替非常剧烈，头痛腰痛，耳鸣眼花，服用此药后便能通利，若阴头轻微肿胀则说明痊愈。如果是女性患阳易病，需用男子的裤裆；如果是男性患阴易病，需用女子的裤裆。取阴阳交换而得的疾病，就用阴阳之物来治疗。
月经布，月经被称为“天癸”，是天一所生的水。上应太阴（月亮），下应海潮，月亮有盈亏，潮汐有早晚，所以月经每月一行，与之相符。其味咸，咸味属水化，热毒得水则能化解，所以能解除极毒的箭毒。女劳复（指女性因劳累或房事导致的热病复发），是在热病刚刚痊愈之后，因交感而引发的症状，发热烦躁，少腹及阴囊牵引疼痛，或者睾丸收缩入腹，腹痛欲死。这是因为前面的病余热未除，阴精再次受损，所以出现这些症状。月经是阴中有阳的物质，能补阴除热，所以主治此症。金疮（金属利器造成的创伤）出血不止，以及虎、野狼咬伤的伤口，还有男子阴部疮疡，因不忌讳月经期间行房，导致阴部溃烂。用处女的血，放在瓦片上烧至存性（保留药性）研成末，用麻油调和敷贴。这些都是血分受伤导致的疾病，以同类相从的原理来补充不足。
童女的首次月经称为“红铅”，能挽回垂危的阳气。如果从女子受孕之时算起，到十四岁足共积五千四百个时辰的周期，就在这一天这个时候，月经来潮的，这就是正鼎，其经血为上药。用法是招摄真气，如果在经血将至时真气先到，采入体内，名为得到大药，可以接续生命，即《首楞严经》所载的“精仙”。这绝非进入丹炉交感修炼，也非通过情想沟通，更不是口服渣质，所以也能成就仙道。萧子真说：有一等旁门左道之人喜好淫欲，强行壮阳后又去采集他人的阴气，口含天癸称之为药，像这样湿滑污秽的做法枉费心机。这话讲的是金丹大道，只有虚极静笃，采集先天祖气而已。而且如果不结丹，四大（地水火风）安可求得，岂能在渣质中寻求？服用红铅而导致热极的，只有童便和乳汁可以解之。
裤裆汁，得到童男童女的效力更强，善于治疗阴阳易证。烧成灰保留药性，研成末用汤水送服。女患须用男裤，男患须找女裤。月经布烧成灰，解药箭毒如神，中毒几乎死亡，服用后立即回生，并治疗女劳复也有效。红铅，是坎宫的一点真阳，无端堕落在尘世，水中的真金，有方法收摄以接续生命。
This is the human cranial vault. Since the brain is the convergence point of all Yang meridians, and this bone serves as the master of all bones in the body, its taste is salty, nature is neutral, and it is non-toxic. It utilizes the principle of "similar things attracting each other" to treat *Chuan Shi* (a chronic wasting disease caused by "tubercle worms") and *Shi Zhu* (an infectious form of tuberculosis), and is needed for dispelling evil and scattering pathogenic factors. However, the *Du Ling Ying Xian Shu · Yao Xing* states: Even if borrowed for the opportunity to heal a life-threatening condition, one must first ask about the sin of being crushed into pieces. Although the medicinal properties remain, benevolent gentlemen should absolutely not use this substance, lest they harm the Heaven and Earth's virtue of fostering life, and would there not be the tragedy of cannibalism? Tianlinggai (Cranial Vault), even if miraculous powers are established, the karmic retribution in the Yin realm is profound; I dare not lightly elaborate to avoid heavenly punishment. Beware.
It refers to the crotch area of women's trousers. Cut the part corresponding to the external genitalia, burn it to ash, and take it orally. Because it resides in the lower body, it possesses abundant Yin Qi. Following the principle of resonance between similar entities, its Qi interacts to guide out pathogenic heat. Therefore, it primarily treats *Yin Yang Yi* (a condition where Yin and Yang energies become disordered and intermingled due to sexual intercourse shortly after severe illness). If the crotch of an virgin girl is used, the effect is even better. The so-called *Yin Yang Yi* occurs when a person suffering from an acute illness engages in sexual intercourse later, causing Yin and Yang energies to immediately adhere to each other, becoming more severe than the original illness. Symptoms include red and scanty urination with dysuria, severe alternating chills and fever, headache, lumbar pain, tinnitus, and blurred vision. After taking this medicine, free flow is restored; if the glans penis swells slightly, it indicates recovery. If a woman suffers from *Yang Yi*, she needs a man's crotch; if a man suffers from *Yin Yi*, he needs a woman's crotch. To treat diseases obtained through the exchange of Yin and Yang, use substances of Yin and Yang.
Menstrual cloth. Menstruation is called *Tian Gui* (Heavenly Water), which is water generated by Heavenly One. It corresponds to the Tai Yin (Moon) above and sea tides below. The moon has waxing and waning phases, and tides have morning and evening rhythms; thus, menstruation occurs once a month, matching these cycles. Its taste is salty. Salty flavor transforms via Water; heat toxins are resolved by Water. Therefore, it can resolve extremely toxic arrow poisons. *Nü Lao Fu* (female relapse due to labor/sexual activity) occurs after a febrile disease has just healed, triggered by sexual contact. Symptoms include fever, irritability, pulling pain in the lower abdomen and scrotum, or testicles retracting into the abdomen, and abdominal pain nearly causing death. This is because residual heat from the previous illness has not been eliminated, and Yin essence is damaged again, leading to these symptoms. Menstrual blood is a substance containing Yang within Yin; it can tonify Yin and clear heat, hence it is used to treat this condition. For *Jin Chuang* (metal weapon wounds) with unceasing bleeding, as well as wounds from tiger, wild boar, or wolf bites, and male genital ulcers caused by ignoring prohibitions against sexual intercourse during menstruation leading to genital rotting: use blood from a virgin, burn it on a tile until the property remains (*Cun Xing*), grind into powder, and apply mixed with sesame oil. These are all diseases caused by injury to the Blood aspect, treated by supplementing deficiency through the principle of similarity.
The first menstruation of a virgin girl is called *Hong Qian* (Red Lead). It can restore Yang Qi on the verge of collapse. Calculating from the time of conception, by age fourteen, a total of 5,400 periods accumulate. On that specific day and time, when menstruation arrives, this is considered the "Correct Cauldron," and its menstrual blood is the supreme medicine. The method involves attracting Qi; if True Qi arrives before the menstrual blood, collecting it into the body is named obtaining the "Great Medicine," which can extend life. This is what is recorded in the *Shou Leng Yan Jing* as "Essence Immortal." It is absolutely not alchemical interaction in a furnace, nor communication through emotional visualization, nor oral ingestion of dregs; thus, it can also achieve the Dao of Immortality. Xiao Zizhen said: There are those of heterodox schools who love lust, forcing Yang only to collect others' Yin, holding Tian Gui in their mouths calling it medicine. Such wet and filthy practices are futile efforts. This statement refers to the Great Dao of Golden Elixir, which relies only on emptiness and stillness to collect the Pre-Heaven Ancestral Qi. Moreover, without forming the elixir, how can the Four Elements (Earth, Water, Fire, Wind) be sought? Can one seek it in dregs? Those who suffer from extreme heat after taking Hong Qian can only be relieved by child urine and breast milk.
Kuchangzhi (Crotch Juice/Solution): Obtained from virgin boys and girls, the efficacy is stronger. It effectively treats *Yin Yang Yi*. Burn to ash retaining the property, grind into powder, and swallow with decoction. Female patients need male crotch, male patients need female crotch. Menstrual cloth burned to ash resolves drug and arrow poison like magic; if poisoned to near death, taking it brings immediate revival. It is also effective for treating *Nü Lao Fu*. Hong Qian is a point of true Yang in the Kan Palace, falling unintentionally into the mortal world. It is true gold in water, with methods to collect it to extend life.