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Measles and smallpox are caused by fetal toxins; no one in life is exempt from suffering from them. However, if one wishes to avoid them, there are methods available. Therefore, the *Qianjin Fang* (Prescriptions Worth a Thousand Gold) records that when a newborn infant has not yet begun to cry, one should urgently use cotton wrapped around a finger to wipe away the foul fluid in the mouth, preventing it from being swallowed into the abdomen, thereby avoiding the onset of measles and smallpox. This is indeed an excellent method. However, in hurried situations, it may be impossible to follow this method strictly. The ancients had methods using Gancao (Licorice Root), Zhusha (Cinnabar), etc., which work very well. If even these are not feasible, it is advisable to use the "Yansheng First Class Formula," applying it conveniently, which can prevent measles and smallpox, or ensure that if they do appear, they will be sparse. A detailed examination of *Quan Shu You You* states: Whenever the weather is abnormal and measles/smallpox are prevalent among neighbors, it is advisable to take the following secret formula, which can prevent the disease entirely, ensuring no future outbreaks.

Formulas:

Yansheng First Formula: After the umbilical cord falls off from a newborn, collect it and place it on a new tile. Roast it with charcoal fire around the perimeter until the smoke nearly ceases. Place it on the ground and cover it with a clay cup or similar vessel to preserve its medicinal nature. Grind it into powder. Prepare transparent Zhusha (Cinnabar) as an extremely fine powder, processed by water flotation. For every 5 fen of umbilical cord, use 2.5 fen of Zhusha. Decoct Shengdihuang (Rehmanniae Radix) and Dangguishen (Angelicae Sinensis Radix) to make a concentrated decoction, approximately one or two shell volumes. Mix this liquid with the first two powders. Apply the mixture to the infant's fontanelle and the nursing mother's nipples. Use up the preparation within one day. On the second day, the infant will pass foul, turbid waste in the stool. This ensures lifelong immunity from sores, rashes, and various diseases. It is a wonderful method where each child born is protected.

Taiji Pill: On the eighth day of the twelfth lunar month, obtain a freshly slaughtered rabbit. Collect its blood and mix it with buckwheat flour. Add a small amount of Xionghuang (Realgar), about 4-5 fen. Dry the mixture into cakes. For newborns, after three days, administer 2-3 pills the size of mung beans, delivered with milk. The appearance of red spots all over the body is the sign of efficacy. Some children will never develop measles/smallpox throughout their lives; if they do, the eruption will not be dense. Once the infant grows older and can eat solid food, feeding them rabbit blood is particularly effective. Some say the eighth day is not necessary; any rabbit from the twelfth lunar month will suffice, but the eighth day is ultimately superior.

Baoying Dan (Infant Protection Pill): For infants who have not yet developed measles/smallpox, administer one pill at the time of the Spring Equinox and Autumn Equinox. The fetal toxin will gradually dissipate. Even taking it only once or twice can reduce severity. Taking it six times over three years will completely eliminate the toxin, ensuring safety. This formula is mysterious and was not lightly transmitted, but out of compassion for children, I wish to share it with benevolent gentlemen everywhere.

Chandou Teng (Vine of the Bean-Wrapping Vine) (1 liang 5 qian: Harvest the vine in August, selecting those with green bean stems and fine red silk-like earth vines. Dry in shade, stir-fry. This is the principal herb.) Heidou (Black Soybeans) (30 grains) Chidou (Red Beans) (70 grains) Shanzha Rou (Hawthorn Flesh) (1 liang) Jingjie (Schizonepetae Herba) (5 qian) Fangfeng (Saposhnikoviae Radix) (5 qian) Danggui (Angelicae Sinensis Radix) (5 qian) Xin Shengma (Fresh Cimicifugae Rhizoma) (7 qian 5 fen) Chishao (Red Peony Root) (5 qian) Huanglian (Coptidis Rhizoma) (5 qian) Jiegeng (Platycodonis Radix) (5 qian) Lianqiao (Forsythiae Fructus) (7 qian 5 fen) Gancao (Glycyrrhizae Radix et Rhizoma) (5 qian) Shengdihuang (Rehmanniae Radix) (1 liang) Chuan Du Huo (Angelicae Pubescentis Radix) (5 qian) Chen Sha (Cinnabar) (1 liang, water-flown, ground separately) Ku Siguwa (Bitter Loofah) (2 fruits, 5 cun long, best if aged through frost, burnt to ash preserving nature) Niubangzi (Arctii Fructus) (1 liang, stir-fried wrapped in paper).

Grind all ingredients into an extremely fine powder and mix evenly. Bind with refined sugar to form pills the size of a plum pit. Take one pill per dose, dissolved in a strong decoction of Gancao (Licorice Root).

The herbs must be carefully prepared in advance. When compounding during the Spring/Autumn Equinoxes, or the 15th of the first and seventh lunar months, one must be sincere and devout. Avoid letting women, cats, or dogs see the process. Compound facing the sun, chanting the mantra seven times: "Divine miraculous medicine, harmonized with nature, ingested by infants, sharing the years of heaven and earth. I invoke Taishang Laojun, execute swiftly as decreed."

Dihui Mian Dou Tang (Purifying Filth and Preventing Smallpox Decoction): In May and June, collect small loofah vine tendrils, dry them in the shade, storing about 2.5 liang. On the night of the first day of the first lunar month (Zi hour), let only one parent know. Decoct the stored loofah vine tendrils in water. When warm, wash the infant's entire body, head, and face, to remove fetal toxins. After washing, measles/smallpox will not appear; if they do, they will be mild, only 3-5 spots. Another method uses gourd vines, washed similarly, which is also effective. Wang Dazhong from Fugou used about 1 sheng of Chinaberry seeds, washing similarly, verified on several people who grew up without developing the disease, which is especially wonderful.