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Huangshizhi (Yellow Earth Lip): Bitter in taste, neutral in nature, non-toxic. Primarily nourishes the Spleen Qi, calms the Five Zang organs, regulates the Middle Jiao, treats diarrhea and dysentery in adults and children, intestinal disorders (Changpi), expels pus and blood, removes white parasites, eliminates jaundice, and treats carbuncles, sores, and worm-infested lesions. Long-term consumption lightens the body and prolongs life. Grows on Mount Song. Color resembles the down of a yellow oriole chick. Harvested at any time. (Cengqing serves as its guiding herb; incompatible with Xixin [Asari Radix et Rhizoma]; fears Feilian [Blatta orientalis]).

Supplementary notes from Tang Bencao: Incompatible with Huanglian [Coptidis Rhizoma], Gancao [Glycyrrhizae Radix et Rhizoma], and Feilian. Leigong stated that for processing, it must be ground into powder, placed in a vessel with fresh cold water, stirred continuously until the motion ceases, and poured out as one basin. This process of "flying" (levigation) is repeated three times. The clear water is discarded, and the levigated sediment is retained for medicinal use. Dosage is unrestricted, but egg products must be avoided during consumption.

Baishizhi (White Earth Lip): Sweet and sour in taste, neutral in nature, non-toxic. Primarily nourishes Lung Qi, thickens the intestines to stop diarrhea, supplements bone marrow, treats insufficiency of the Five Zang organs manifesting as palpitations and fright, subcardiac vexation, abdominal pain, watery diarrhea, heat-induced loose stools of the Small Intestine, passage of pus and blood, metrorrhagia and leukorrhea (red and white discharge) in women, and discharges pus from carbuncles, sores, and hemorrhoids. Long-term consumption calms the mind, reduces hunger, lightens the body, and promotes longevity. Grows on the north side of Mount Tai. Harvested at any time. (Combined with Houpo [Magnoliae Officinalis Cortex] and rice broth, it stops bloody stool; Yanshi [Stercus Hirundinis] serves as its guiding herb; incompatible with Songzhi [Pini Resina]; fears Huangqin [Scutellariae Radix]).

Tang Bencao commentary states: Baishizhi is currently produced in the mountains of Cizhou, superior to other sources. It is not heard of on the left side of Mount Tai. Ministers Yu Xi et al., according to the Shu edition and Xiao Bing, note incompatibility with Huanglian, Gancao, and Feilian. Yaoxing Lun states: Baishizhi, also known as Baifu. (Incompatible with Mumu Dougong; sweet and pungent in taste; astringes the Large Intestine).

Tujing says: Baishizhi grows on the north side of Mount Tai. Su Gong states it is produced in the mountains of Cizhou, not on the left side of Mount Tai. Currently, only Luzhou produces it. Since Luzhou is close to Cizhou, it should also be usable; ancient formulas for dysentery often used this herb. However, contemporary physicians rarely use it. Harvested at any time. The five-colored Shizhi were listed under a single entry in older texts, all growing in the valleys on the south side of Mount Nan, with identical indications. Later authors separated them; due to different origins, their functions differ, and usage should follow the subsequent entries. Currently, only red and white varieties are used; others are no longer recognized. Wei Zhou's Duxing Fang from the Tang Dynasty treats infants with persistent umbilical discharge accompanied by redness and swelling by applying fine powder of Baishizhi, warmed, to the navel three times daily, which is effective. Additionally, Doumen Fang treats diarrhea and dysentery using equal parts Baishizhi and Ganjiang [Zingiberis Rhizoma], pounded together, mixed with boiling water and flour into a thin paste, rolled into pills the size of wu zi (Vitex seeds), dried in the sun, and taken with water, thirty pills per dose. For chronic dysentery unresponsive to treatment, add another thirty pills. For cholera-like syndrome (Huoluan), decoct with Jiangshui (fermented grain water) as the vehicle.

Zimu Bilu treats infant watery diarrhea where the child is too emaciated to tolerate strong decoctions. Half a tael of Baishizhi, ground to powder, is mixed with white rice porridge and fed to the child on an empty stomach.

Shuoshuo states: According to Tang commentary, it was produced in the mountains of Suzhou and Yuhang, but is no longer harvested there. Although Suzhou now offers red and white varieties as tribute, they are not ideal for medicinal use. The best quality comes from the mountains of Yanzhou, extracted between two stones. When Yanzhou was besieged by foreign troops and suffered from water shortages, deep pits three to five zhang wide and deep were dug, and the walls were sealed with Shizhi to store water without leakage for long periods, proving its efficacy.

Yanyi states: For newborns under one month old who cry excessively causing bleeding from the umbilicus, applying fine powder of Baishizhi externally cures the condition. If not healed, slightly stir-fry the powder, let it cool, and reapply, ensuring the wound is not peeled or disturbed.