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*Bei Yan Shi Gui* records: Use five qian of Yuanming powder (calcium sulfate), Banxia (Pinelliae Rhizoma), Qingyan (halite), Baiyaocao, Tianhuafen (Trichosanthis Radix), and Baifuling (Poria) each; two qian of Hezi (Terminalia Chebulae Fructus), Gancao (Glycyrrhizae Radix et Rhizoma), and Wumei (Mume Fructus) with pits removed; and three qian of Pengsha (Borax) and Jiegeng (Platycodonis Radix). All the above are decocted in snow water until half-dry, filtered to remove dregs, clarified to obtain the liquid, used to boil citrus fruits, then slowly dried over a charcoal brazier with mild fire. Turn twice daily, gently kneading each time to ensure the medicinal flavor fully penetrates the peel; if broken during kneading, it is undesirable. It can clear heat and resolve phlegm, broaden the middle and direct qi downward.

*Bai Cao Jing* records: The preparation of Qingyan Chenpi (Citri Reticulatae Pericarpium with halite) is a method left by Song Gong Temple in Suzhou. Take two jin of Chenpi, soak in river water for one day, lightly scrape off the floating white layer with a bamboo knife, store in a bamboo basket, pour boiling water over it three or four times, wash clean with cold river water until not bitter; dry until half-dry to obtain one jin of pure peel. Initially, mix and dry with a thick decoction of four liang of Gancao and four liang of Wumei flesh, expose to night dew, wait until soft enough to crumble like beans, then use four liang of Chuanbeimu (Fritillariae Cirrhosae Bulbus) with heart removed and three liang of Qingyan, grind into fine powder, mix evenly, dry and expose to dew, then store. It has the effects of resolving phlegm and directing qi downward, generating fluids and relieving depression, regulating spleen and stomach, detoxifying and calming the spirit.

It grows on orange trees, resembling a wood fungus (Mu Xun), with skin red like jujube. It treats Ru Yong (mastitis); decoct in wine and take orally.

This is what is referred to as "Jixin Binglang" (Chicken-heart Areca Nut) in the *Bencao Gangmu* under the entry for Binglang. Its shape resembles a chicken heart, pointed at one end and round at the other, only as large as a little finger, wrapped in a shell externally. The shell is white, shaped like Doukou (Cardamomi Fructus), pointed like an olive, less than half an cun long. Medicine shops usually select it from Doukou; there are only a few grains per jin of Doukou, and the price is double. There are no specialized sellers in Guangnan either; some say this is the true Jixin Binglang. What is sold in Guangnan markets are all Shanbinglang (Mountain Areca Nut) and Dafuzi (Arecae Fructus) respectively. Li Shizhen followed Zhu's theory, identifying Shanbinglang as Jixin Binglang, which may be mistaken. For treating Fanwei Yige (regurgitation and dysphagia), its other functions are the same as Guang Binglang.

Note: *Bai Cao Jing* records: The Binglang currently sold in medicine shops is flat, round, and large, being Dafuzi, commonly known as female Binglang. Those produced in Wenchang County, Guangdong, are named Wenchangzi; those that are small and pointed are named Zhuci Binglang, also called Zizi, with a long pointed shape resembling a chicken heart, containing brocade-like patterns internally, also known as Jixin Binglang, i.e., male Binglang. Another type of Jixin Binglang comes from foreign ships, selected from White Doukou, extremely rare, also long and pointed, very small, with an external shell resembling a jujube pit, hence also called Zaohé Binglang (Jujube-pit Areca Nut), which is superior for medicinal use.

Auricular Moxibustion Method from *Jingyan Guangji*: Take one Jixin Binglang, dig a pit in the navel area the size of a coin hole, fill it with Shexiang (Moschus), place it in the affected ear, moxibustion with moxa cones, not exceeding three or four times, will be effective.

Pediatric Ganying (Infantile Malnutrition) Formula by Hu Kaifu: Five raw Shijunzi (Quisqualis Fructus) and five cooked Shijunzi; Binglang from within Doukou is ground into juice with ginger soup, dipped onto Shijunzi meat and eaten on an empty stomach; cured in one or two doses.

Otorrhea: Powder the Binglang from within Doukou, insufflate into the ear for immediate cure (*Jiusheng Kuhai*).

Oral Ulcer: Calcine the Binglang from within Doukou to retain its nature, add Qingfen (Calomelas) and apply topically (*Guangguo Lu*).