疗逆产方 盐涂儿足底。又可急搔抓之，并以盐摩产妇腹上，即产。
又方∶以盐和粉，涂儿两足，下即顺矣。
《集验方》疗逆产 烧钱令赤，纳酒中饮之。
又方∶取夫阴毛二、七茎烧，以猪膏和丸如豆大，水吞下，儿手即握出，神验。
疗产难方 取车 中膏画腋下及掌心。崔氏、文仲、《短剧》、《千金》、《集验》、《备急》
同。
疗逆产胞衣不出方 取灶屋黑尘，研为细末，酒调方寸匕。一方用梁上尘。
疗横生、逆产，服诸符药不捷者 灸右脚小指尖头三壮，艾炷如小麦大。
疗横生、倒产，手足先出方（并出《外台》）。用粗针刺儿手足，入二分许，儿得痛惊转
即缩，自当回顺。文仲、《备急》、《千金》、崔氏、《集验》同。
横产、逆产二条，其理虽别，疗法盖同。可以意量，逐善参用也。
论曰∶产难者何？胎侧有成形块为儿枕，子欲生时，枕破与败血裹其子，故难产。但服
胜金散，逐其败血即自生。若逆生、横生，并皆治之。
麝香（一钱，研） 盐豉（一两，以旧青布裹了，烧令赤，急以乳钵研细）
上为末，取秤锤烧红，以酒淬之，调下一大钱。
陈无择评曰∶产难不只胎侧有儿枕破，与败血裹凝伤其胎息，因缘自有难易。其如横逆
，多因坐草太早，努力过多，儿转未逮；或已破水，其血必干，致胎难转。若先露脚谓之逆
，先露手谓之横。法当以针刺之，使自缩入，即服神应黑散以固其血，必自转生。《养生方
》云∶仓皇之间，两命所系，不可不广传，盖赞黑散之功也。或以盐涂儿脚底搔抓之。
神应黑散方（见前，即催生如神散）
Formulas for Treating Breech Presentation (Nì Chǎn, a condition where the fetus presents feet or buttocks first): Apply salt to the soles of the infant's feet. Alternatively, rapidly scratch the soles of the infant's feet and massage the mother's abdomen with salt; delivery will ensue immediately.
Another formula: Mix salt with rice flour and apply it to both feet of the infant; upon descent, the birth will be smooth.
*Ji Yan Fang* (Collected Proven Prescriptions) for treating breech presentation: Burn a copper coin until red-hot, place it in wine, and have the patient drink it.
Another formula: Take fourteen strands of the husband's pubic hair, burn them to ash, mix with lard (Zhū Gāo, Pig Fat) to form pills the size of beans, and swallow with water. The infant's hands will grasp and emerge; this is highly effective.
Formula for Treating Dystocia (Chǎn Nán, difficult labor): Extract grease from an axle (Chē Zhóu), and apply it to the axilla and palms. This method is consistent across texts by Cui Shi, Wen Zhong, *Duan Ju*, *Qian Jin*, *Ji Yan*, and *Bei Ji*.
Formula for Treating Breech Presentation with Retained Placenta (Bāo Yī, fetal membranes): Collect black dust from the walls of a kitchen stove, grind into fine powder, and take one *cun bi* (a square-inch measure) mixed with wine. Another variant uses dust from roof beams.
For transverse presentation (Héng Shēng) and breech presentation where various talismanic medicines have failed: Moxibustion (Jiǔ) three applications on the tip of the little toe of the right foot. The moxa cone should be the size of a wheat grain.
Formula for Treating Transverse Presentation and Inverted Presentation (Dǎo Chǎn) where limbs present first (Excerpted from *Wai Tai Mi Yao*): Puncture the infant's hands and feet with a coarse needle to a depth of approximately two *fen*. The pain and fright will cause the infant to turn, allowing the limbs to retract naturally, facilitating a normal position. This is consistent with records by Wen Zhong, *Bei Ji*, *Qian Jin*, Cui Shi, and *Ji Yan*.
Although the pathophysiology of transverse and breech presentations differs, their therapeutic approaches are largely similar. One may exercise discretion to select the most appropriate method.
Discussion: What constitutes dystocia? A formed mass on the side of the fetus is called "Er Zhen" (Child's Pillow). When birth is imminent, this mass ruptures, and stagnant blood (Bài Xuè) wraps around the fetus, causing difficulty in delivery. Administering *Sheng Jin San* (Winning Gold Powder) to expel the stagnant blood allows for spontaneous delivery. This applies to both inverted and transverse presentations.
Ingredients:
She Xiang (Moschus, Musk) - 1 qian, ground.
Yan Chi (Fermented Soybeans) - 1 liang, wrapped in old blue cloth, burned until red-hot, then quickly ground finely in a mortar.
Process: Grind the above ingredients into powder. Heat a weight (scale hammer) until red-hot, quench it in wine, and use this liquid to administer one large qian of the powder orally.
Commentary by Chen Wuyue: Dystocia is not solely caused by the rupture of the "Child's Pillow" on the side of the fetus and the condensation of stagnant blood damaging fetal vitality; difficulties arise from various causes. Regarding transverse and breech presentations, these often result from starting labor preparations too early or excessive pushing before the fetus has rotated sufficiently. Or, if the waters have broken, the fluids dry up, making fetal rotation difficult. If the feet present first, it is called breech presentation; if the hands present first, it is called transverse presentation. The treatment should involve puncturing with a needle to induce retraction, followed by administering *Shen Ying Hei San* (Divine Response Black Powder) to consolidate the blood, ensuring the fetus turns spontaneously for delivery. *Yang Sheng Fang* states: "In moments of panic, two lives are at stake; this must be widely disseminated," praising the efficacy of the Black Powder. Some also recommend applying salt to the infant's soles and scratching them.
*Shen Ying Hei San* Formula (See previous section, also known as *Cu Sheng Ru Shen San*).