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When a patient has suffered from Cold Damage (Shanghan) for eight days and the disease has not resolved, it may be due to the pathogenic factors re-entering the various Yin and Yang meridians. Alternatively, it may result from toxic pathogens remaining in the body after improper use of sweating, vomiting, or purging therapies, leading to prolonged illness.

Biejia San (Turtle Shell Powder), sourced from *Shenghui Fang*, is indicated for Cold Damage on the eighth day, characterized by intensified heat, dry and obstructed stool, epigastric and abdominal fullness and discomfort, inability to ingest food, and mental confusion.
Ingredients: Bie Jia (Chelonae Carapax et Plastrum, 1 liang, brushed with vinegar and roasted until slightly yellow, skirt removed); Xi Xin (Asari Radix et Rhizoma, 1 liang); Wu Zhu Yu (Evodiae Fructus, 3 liangs, soaked in decoction seven times, dried, and lightly roasted); Bai Xian Pi (Dictamni Cortex, 2 liangs, cut into small pieces). The above four herbs are ground and sifted into a powder. Each dose consists of 5 qian bi (approx. 5-10g depending on era/region, here translated as 'dose unit'), boiled with 1 zhong zhan (approx. 200ml) of water and half a fen of fresh ginger, reduced to 6 fen (approx. 120ml), strained, and taken warm at any time.

Fuzi Tang (Aconite Decoction), sourced from *Shenghui Fang*, is indicated for Cold Damage on the eighth day where wind and warm pathogens interact, causing body pain, irritability, inability to turn over independently, absence of vomiting, and absence of thirst. If mistakenly treated with purging methods... [Text cuts off].
Ingredients: Fu Zi (Aconiti Lateralis Radix Praeparata, 1 liang, processed until cracked, skin and umbilicus removed); Gui Xin (Cinnamomi Ramulus, 1 liang); Bai Zhu (Atractylodis Macrocephalae Rhizoma, 1 liang); Bai Zhi (Angelicae Dahuricae Radix, 1 liang); Gan Cao (Glycyrrhizae Radix et Rhizoma, 0.5 liang, processed until slightly red, cut into pieces). The above five herbs are ground and sifted into a powder. Each dose is 0.5 liang, boiled with 1 zhong zhan of water, reduced to 6 fen, strained, and taken warm at any time.

Yinchen Tang (Artemisiae Scopariae Decoction), sourced from Bao Shi Fang, is indicated for Cold Damage between the seventh and eighth days, characterized by heat accumulation, jaundice resembling the color of an orange, difficult urination, and abdominal distension. It is also applicable for blood stasis and heat caused by alcohol injury.
Ingredients: Yin Chen (Artemisiae Scopariae Herba, 1 liang); Dan Zhu Ye (Lophatheri Herba); Da Huang (Rhei Radix et Rhizoma, 3.5 qian); Zhi Zi (Gardeniae Fructus, 5 large fruits); Tong Cao (Tetrapanacis Medulla, 2 qian). The above five herbs are ground and sifted into a powder. Each dose is 3 qian, boiled with 2 zhan of water, reduced to 1 zhan, strained, and taken warm.

Another formula for Cold-induced Jaundice:
Ingredients: Chuan Da Huang (Rhei Radix et Rhizoma, 1.5 liang, cut into pieces and lightly roasted); Gui Xin (Cinnamomi Ramulus, 3 fen). The above two herbs are ground and sifted into a powder. Each dose is 4 qian, boiled with 1 zhong zhan of water and half a fen of fresh ginger, reduced to 6 fen, strained, and taken warm.

Xijiao San (Rhinoceros Horn Powder), sourced from *Shenghui Fang*, is indicated for Cold Damage on the eighth day, characterized by persistent irritability and heat, and pain in the four limbs.
Ingredients: Xi Jiao Xie (Rhinocerotis Cornu, 1 liang); Chuan Sheng Ma (Bupleuri Radix? Note: Historically Sheng Ma refers to Cimicifugae Rhizoma, but Chuan Sheng Ma often implies specific regional variety or confusion with Bupleuri in some texts; WHO standard uses Cimicifugae Rhizoma for Sheng Ma), (1.5 liang); Chai Hu (Bupleuri Radix, 1.5 liang, radix removed); Ge Gen (Puerariae Lobatae Radix, 1.5 liang, cut); Wu Lan (Isatidis Folium? Or Baphicacanthis Cusii Folium? Historically Wu Lan varies, often Isatidis Folium or similar cooling herbs), (1 liang); Gan Cao (Glycyrrhizae Radix et Rhizoma, 0.5 liang, processed, cut). The above six herbs are ground and sifted into a powder. Each dose is 3 qian, boiled with 1 zhong zhan of water, reduced to 6 fen, strained, and taken warm at any time.

Another formula (sourced from *Shenghui Fang*):
Ingredients: Chai Hu (Bupleuri Radix, 1 liang, radix removed); Huang Qin (Scutellariae Radix, 1 liang); Xi Jiao Xie (Rhinocerotis Cornu, 3 fen); Fu Ling (Poria, 3 fen); Ren Shen (Ginseng Radix, 1 liang, rhizome removed); Gan Cao (Glycyrrhizae Radix et Rhizoma, 0.5 liang, processed, cut). The above six herbs are ground and sifted into a powder. Each dose is 3 qian, boiled with 1 zhong zhan of water, reduced to 6 fen, strained, and taken warm at any time.

Shengdihuang Wan (Rehmanniae Pill), sourced from *Jisheng Babui Fang*, is indicated for patients who, after seven or eight days of illness, present with deep, slow, fine, and weak pulses in both hands, cold skin, fullness below the umbilicus, mania or restlessness, solid black stool, and free urination. These constitute the complete syndrome of Blood Stasis (Xuexue). For elderly or young patients with Qi deficiency and weakness, this formula is appropriate.
Ingredients: Sheng Di Huang (Rehmanniae Radix Recens, 1 sheng of natural juice; if unavailable, use Sheng Gan Di Huang/Dried Rehmanniae Radix, 2 liangs); Gan Qi (Drynariae Rhizoma? No, Gan Qi usually refers to Drynaria or sometimes Myrobalan, but in context of blood stasis pills like in *Jisheng Fang*, it often refers to Drynariae Rhizoma or specifically processed Lacca/Gallnut? Actually, in classical formulas for blood stasis, Gan Qi (干漆) is Drynariae Rhizoma? No, Gan Qi (干漆) is Lacca/Dry Resin of Rhus verniciflua. Wait, Gan Qi (干漆) is Lacca. Gan Qi (甘杞) is Lycium. The text says "Gan Qi" (干漆). In TCM, Gan Qi (干漆) is Lacca. It is processed by frying until smoke ceases); Sheng Ou (Nelumbinis Rhizoma Recens, 0.5 sheng of natural juice); Shui Zhi (Hirudo, 10 pieces, fried until yellow). The above four ingredients are processed into pills with honey, sized like wuyuan seeds. Take 20 pills per dose with warm water, at any time. Caution is advised against excessive use which might fail to stop bleeding or cause other adverse effects; hence this decoction/pill formulation is established.

Regarding nasal hemorrhage (Nu): Sweating therapy is contraindicated for patients with nasal hemorrhage because their pulse is typically faint. If the pulse is floating and tight, Mahuang Tang (Ephedra Decoction) is indicated. If the pulse is floating and slow, Guizhi Tang (Cinnamon Twig Decoction) is indicated. If the pulse is already faint, Xijiao Dihuang Tang (Rhinoceros Horn and Rehmannia Decoction) is indicated.