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Take *Boswelliae Carthartici Resina* (Ruxiang, 乳香), grind it into a fine powder, and use pig heart blood as the binder to make pills, sized like *Koelreuteriae Fructus* seeds (Wutongzi, 梧桐子). Coat with *Cinnabaris* (Zhusha, 朱砂) and dry in the sun. Take one pill per dose. For inducing labor, dissolve in cold wine.

Shenyansan (Divine Efficacy Powder): When the parturient sits on straw for delivery, take one foot of an old grass horse from the roadside, burn it to ash using a small ear rope from the nose ring, and mix with warm wine for oral administration. If the left foot is obtained, the baby will be male; if the right foot, female; if upside down, the baby is dead; if on its side, the baby has been startled. This is natural law. Although this medicine does not seem essential, it is extremely effective for inducing labor. It should only be taken when lower back pain occurs during labor.

Formula: *Ginseng Radix et Rhizoma* (Renshen, 人参) [ground to powder] 1 qian, *Boswelliae Carthartici Resina* (Ruxiang, 乳香) 1 qian, *Cinnabaris* (Chensha, 辰砂) 2 qian.
Grind these together uniformly. At the time of labor, urgently mix the powder with one egg white, then dilute with fresh ginger juice and take cold. For breech or transverse presentations, it can immediately correct the position for delivery.

For treating retained dead fetus and ruptured membranes preventing delivery, this formula has proven effective repeatedly, saving tens of thousands. *Manihotis Radix* (Guijiu, 鬼臼) quantity unspecified; select yellow ones, remove the tips, and grind to a fine powder without sieving, crushing by hand. Take 2 qian per dose, decoct with one cup of unadulterated wine until reduced to 80%, and take orally while warm. The effect is miraculous.

For prolonged difficult labor with exhaustion, inability to deliver, accompanied by complete discharge of lochia and dry uterus preventing birth.
Take 2 sheng of *Phaseoli Semen Rubrum* (Chixiaodou, 赤小豆), add 9 sheng of water, boil until cooked, and extract the juice. Add 1 liang of prepared *Colla Corii Asini* (Ming Ejiao, 明阿胶), decoct briefly, and take 5 he per dose. Repeat if ineffective.

Another prescription: To rescue prolonged difficult labor where delivery has not occurred after many days.
Take 0.5 liang of *Lepidocrocitum* (Yunmu Fen, 云母粉), mix with warm wine and administer. Delivery should occur upon ingestion; even if difficult, it will proceed immediately. Extremely effective.

For transverse or oblique presentations, irregular labor mechanics, premature emergence of limbs, or fetal death in utero.
Grind *Longgu Fictum* (Fulonggan, 伏龙肝) finely. Take 1 qian per dose, mixed with wine. The fetal head will emerge along with it. Excellent. Also apply to the mother's umbilicus, which is also effective. Alternatively, use *Cuscutae Semen* (Tusizi, 菟丝子).

Prescription for retained dead fetus. Symptoms include cyanosis of fingernails and tongue, severe abdominal distension and oppression, and extreme fetor oris. First, administer one dose of *Pingwei San* (Calm the Stomach Powder), divided into two servings, each taken with wine. If bloody fluid is discharged...

Prescription for retained placenta due to difficult labor. If the fetus is dead in utero and life is critical, use *Pinelliae Tuber* (Banxia, 半夏) and *Ampelopsis Radix* (Bailian, 白蔹), 1 liang each, ground to powder, taken with wine, 1 qian per dose. For general difficult labor, one dose suffices...

Single herb prescription: For difficult labor where the due date has not arrived but pain resembles impending delivery.
Take 2 liang of *Anemarrhenae Rhizoma* (Zhimu, 知母), grind to powder, and make pills with honey the size of a chicken head. Dissolve one pill in warm wine and take.