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[Mo, i.e., Ink Stick]
Taste: Pungent. Nature: Warm. Toxicity: Non-toxic.
[Maintenance of Health / Indications] Primarily stops bleeding and generates flesh, promotes healing of metallic wounds, treats postpartum blood syncope (dizziness/fainting due to blood loss), and sudden heavy uterine bleeding (Beng Zhong). Take it ground with vinegar and swallowed. It also stops bloody dysentery and treats infant "Ke Wu" (a condition in infants caused by fright or alien influences). Applied to the eyes, it removes nebulae (corneal opacities).
[Meridian Tropism] Enters the Heart and Liver meridians. It is a cooling agent.
[Preliminary Discussion] Zhu Danxi stated: "Ink belongs to Metal but contains Fire. In medicine, it exerts a vigorous nature and can stop bleeding."
*Above are the Light Agents of the Earth Section.*

[Cicada Slough]
Taste: Salty, Sweet. Nature: Cold. Toxicity: Non-toxic. It takes shape from the residual Qi of Water and Earth. Its flying and chirping obtain the clear Qi of wind and dew. Its action can ascend and descend; it is Yang within Yin.
[Maintenance of Health / Indications] Primarily treats infantile convulsions and epilepsy, and dystocia (difficult childbirth) in women. Burn to ash and take with water. Treats chronic dysentery. (From *Mingyi Bielu*). Grind into powder, take one qian, and swallow with well-water. [Text fragment missing regarding measles/rubella].
[Meridian Tropism] Enters the Liver meridian. It is an agent that expels wind and dissipates heat.
[Preliminary Discussion] Zhang Yuansu (Haizang) stated: "Cicada slough removes nebulae, taking advantage of its shedding nature. Cicada's nature is shedding, thus it removes nebulae; Snake's nature is burrowing/crawling, thus it expels wind. Utilize them according to their natures."
*Above are the Light Agents of the Insect Section.*

[Cishi, Magnetite]
Xu Zhicai stated: "Heavy agents can dispel timidity. Magnetite (Cishi) and Iron Powder belong to this category." Zhang Congzheng stated: "What is called 'heavy' refers to sedating and purging downward. Timidity causes Qi to float..." [Text fragment missing regarding emaciation].

[Chenxiang, Agarwood]
Taste: Pungent, Bitter. Nature: Slightly Warm. Toxicity: Non-toxic. It is generated by Yang Qi and condenses having absorbed the essence of rain and dew. Its action can ascend and descend; it is Yang.
[Maintenance of Health / Indications] Primarily treats wind-water toxic swelling and eliminates evil Qi. (From *Mingyi Bielu*). Treats heart and abdominal pain, cholera-like syndrome, sudden poisoning by evil ghosts/pathogenic qi. [Text fragment missing regarding regulating middle jiao/skin]. Treats upper heat... [Text fragment missing].
[Meridian Tropism] Enters the Spleen, Stomach, and Kidney meridians, and concurrently enters the Heart and Liver meridians. It is an agent that directs Qi downward and tonifies Yang. (Concurrent with the Disseminating Agent).
[Preliminary Discussion] Zhong Chun stated: "Most woods float, but Agarwood alone sinks. Therefore, it can direct Qi downward and sink phlegm-fluids. It can descend and also ascend. Its fragrance enters the Spleen..." [Text fragment missing].
[Contraindications] Jing Shu stated: "It is a crucial herb for treating cold Qi, rebellious Qi, and Qi stagnation. However, it is contraindicated for those with deficient Middle Qi and Qi failing to return to its source. Those with Excess Heat in the Heart Meridian..." [Text fragment missing].
[Processing] Lei Gong stated: "It must not be dry; it should be black and sink to the bottom of water to be superior. Half-sinking is secondary. Do not expose it to fire." Li Shizhen stated: "... [Text fragment missing]."

[Zitan, Red Sandalwood]
Nature: Cold. Toxicity: Non-toxic. It is generated by Water Qi. It descends. It is Yin within Yang.
[Maintenance of Health / Indications] Primarily used for grinding and applying to treat malignant toxic wind-poison. (From *Mingyi Bielu*). Scrape into powder, apply to metallic wounds to stop bleeding and relieve pain. Treats strangury. (From Hongjing). Ground with vinegar and applied... [Text fragment missing].
[Meridian Tropism] Enters the Liver meridian. It is an agent that harmonizes Blood. (A key herb for the Blood aspect).
[Preliminary Discussion] Yu Tun stated: "White Sandalwood is pungent and warm, an agent of the Qi aspect. Thus, it can regulate Defensive Qi and harmonize the Spleen and Lungs, benefit the chest and diaphragm. Red Sandalwood is salty and cold..." [Text fragment missing].
Editor's Note (Ao An): Red Sandalwood can disperse lochia retention after childbirth, which condenses to cause disease. This has not been recorded in the Materia Medica. In July of the Jichou year, I once treated a woman aged twenty-two... [Medical Case Narrative follows, describing symptoms like headache, fever, thirst, sore throat, pulse conditions (fine and rapid at chi position indicating postpartum state;洪数 at cun position indicating heat), diagnosis of 'E Du' (Malignant Toxin) affecting the Guan positions, treatment plan involving stopping medication temporarily, then prescribing a formula including Red Sandalwood, E-Jiao Pearl, etc., leading to sleep and reduced heat, followed by adding Red Sandalwood to pills, resulting in resolution of swelling and pain.]
*Above are the Heavy Agents of the Wood Section.*