Library

[Supplementary Records]

[Names] Li Shizhen stated: It is named so because it can treat "Da Feng" disease (leprosy).

[Collected Explanations] Li Shizhen stated: *Fengdazi* (Chilean Pine Nut) is found in various countries south of the Hainan region. According to Zhou Daguan's *Records of Zhenla*: The fruit comes from a large tree named "Da Feng," resembling a coconut but rounder. Inside are dozens of seeds, as large as *Leiwanzi* (a medicinal herb). The kernel is white; if left for too long, it turns yellow and oily, rendering it unsuitable for medicinal use.

[Preparation] Li Shizhen stated: The method for extracting *Fengdazi* oil is as follows: Take three jin (approx. 1.5 kg) of *Fengdazi* (remove shells and those that have turned yellow/oily), grind them into an extremely fine paste, place them in a porcelain vessel, seal the mouth, and submerge the vessel in boiling water. Cover the pot tightly to prevent air leakage. Boil using alternating mild and strong heat until it becomes a black paste, known as *Fengda You* (Wind Giant Oil), which can be mixed with other medicines.

[Properties and Flavor] Pungent, hot, toxic.

[Indications] Treats wind-related tinea, scabies, leprosy-like skin diseases, yaws (chancre), and various sores; has the function of attacking toxins and killing parasites (Li Shizhen).

[Elucidation] Zhu Zhenheng stated: Incompetent physicians treating "Da Feng" disease often adjunctively use *Fengda You*. They fail to realize that this substance is hot in nature; while it has the effect of drying dampness and resolving phlegm, it damages blood yin. There are cases where patients go blind before their illness is cured.

Li Shizhen stated: *Fengda You* treats sores by killing parasites and purging toxins, but it should not be taken internally in large doses. When applied externally, its efficacy is undeniable.

[Attached Prescriptions] Five new prescriptions.

For various forms of leprosy: One liang (approx. 37.5 g) of *Fengda You*, three liang of *Kushen* powder (*Sophorae Tonkinensis Radix*), mixed with a small amount of wine to form pills the size of *Wutongzi* (Chinese parasol tree seeds). Take fifty pills each time on an empty stomach with warm wine. Continue to wash the affected area with a decoction of *Kushen* (*Sophorae Tonkinensis Radix*) (from *Puji Fang*).

For cracked sores caused by leprosy: Burn *Fengdazi* until carbonized but retaining its properties, mix with sesame oil (*Sesami Oleum*) and *Qingfen* (Calomel), grind together, and apply topically. Also, wash with a decoction made from the shells (from *Lingnan Weisheng Fang*).

For malignant yaws sores: Same prescription as above.

For wind-induced prickles and rhinophyma (red nose): Grind kernels of *Fengdazi* and *Mubiezi* (*Strychni Semen*) with *Qingfen* and sulfur into a powder. Mix with saliva every night and apply topically.

For chapped hands: Mash *Fengdazi* into a paste and apply (from *Shouyu Shenfang*).

[Sea Medicines]

[Names]

[Collected Explanations] An unnamed physician stated: According to Xu Biao's *Nanzhou Ji*: It grows in gardens of households in the South Sea region. It grows from a large tree, has round leaves and pods. Recently, it has also been successfully cultivated in the Shu region.

Li Shizhen stated: The tree is two to three zhang (approx. 6-9 meters) tall, with leaves resembling pear leaves but rounder. According to Song Qi's *Yibu Fangwu Tu*: The red bean (*Hongdou*) leaves are round and glossy like holly (*Ilex chinensis*), blooming with white flowers in spring, bearing pods on branches. The fruits hang in clusters like beads, slightly flatter than large red beans, with red skin and white flesh. It is named for its resemblance [to other beans], and people in Shu consume it as a fruit.

[Properties and Flavor] Slightly cold, slightly toxic.

[Indications] Treats hyperpigmentation, tinea versicolor (pityriasis versicolor), and migratory wind on the head and face (erythema or pruritus). Suitable for inclusion in facial masks and bath beans (ancient cleansing cosmetics) (unnamed physician).