古字作楂。泻、破气消食、化痰散瘀。
酸甘微温。健脾行气。消食磨积。（善去腥膻油腻之积、与麦芽消谷积者不同、凡煮老
鸡、
硬肉、投数枚、则易烂、其消肉积可知。）散瘀化痰。发小儿痘疹。行乳食停留。止儿枕作
痛。（恶露积于太阴、少腹作痛、名儿枕痛、砂糖调服。）疗小肠疝气。茴香佐之。）多食令
人嘈烦易饥。反伐脾胃生发之气。（凡服人参不相宜者、服山楂即解、一补气、一破气也。）
胃中无积。及脾虚恶食者。忌服。有大小二种。小者入药。一名棠球子。去皮核。（核亦有
用、化食磨积、治疝、催生。）
宣、理气调中、泻、燥湿、消痰。
辛能散，温能和，苦能燥能泻。为脾、肺气分之药。（脾为气母、肺为气龠、凡用补药
涩药
、有宜佐陈皮以利气者。）调中快膈。导滞消痰。（大法治痰、以健脾顺气为主、洁古曰∶陈
皮
定呕止嗽。利水破症。宣通五脏。统治百病。皆取其理气燥湿之
功。入和中药。则留白。入疏通药。则去白。去白名橘红。兼能除寒发表。（皮能发散皮肤
。）气虽中和。亦损真元。无滞勿用。广产为胜。皮浓不脆。有猪棕纹。（福建产者、名建皮
、力薄、浙江衢州出者、名衢皮、更恶劣矣。）陈久者良。故又名陈皮。（陈则烈气消、无燥
散之患、半夏亦然、故同用、名二陈汤。）治痰咳。童便浸晒。治痰积。姜汁炒。入下焦。
盐水炒。（化州陈皮、消痰甚灵、然消伐太峻、不宜轻用、况此物真者绝少、无非柚皮而已
。）
The ancient character is written as "Zha" (Shanzha). It has the effects of purging, breaking qi stagnation, digesting food, resolving phlegm, and dissipating blood stasis.
Its taste is sour and sweet, and its nature is slightly warm. It strengthens the spleen and promotes qi circulation. It eliminates food accumulation. (It is particularly effective in removing accumulations caused by greasy, fishy, or mutton-flavored foods, which differs from Maiya (Malt) that resolves grain accumulations. When boiling old chicken or tough meat, adding a few pieces makes the meat tender easily, demonstrating its ability to resolve meat accumulations.) It dissipates blood stasis and resolves phlegm. It promotes the eruption of infantile smallpox/rashes. It facilitates the movement of milk and food residues, preventing stagnation. It relieves postpartum epigastric pain known as "Erzhen Tong" (Child Pillow Pain). (This condition involves lochia accumulating in the Taiyin channel, causing lower abdominal pain; it can be taken with brown sugar for mixing.) It treats intestinal hernia. (It can be combined with Huixiang (Fennel Fructus).) Excessive consumption causes heartburn, restlessness, and easy hunger, and conversely damages the generating qi of the spleen and stomach. (For those who are incompatible with Ginseng Radix et Rhizoma (Renshen), taking Shanzha provides relief, as Renshen tonifies qi while Shanzha breaks qi.) Those without food accumulation in the stomach, and those with spleen deficiency and poor appetite, should avoid taking it. There are two types: large and small. The small ones are used medicinally, also known as Tangqiuzi (Crataegus fruit). The peel and core should be removed. (The core is also useful; it digests food, resolves accumulation, treats hernia, and induces labor.)
Xuan (Promoting circulation), regulating qi and harmonizing the middle jiao, purging, drying dampness, and resolving phlegm.
The pungent flavor disperses, the warm nature harmonizes, and the bitter flavor dries and purges. It is a herb acting on the qi level of the Spleen and Lung. (The Spleen is the mother of qi, and the Lung is the pivot of qi. Whenever using tonifying or astringent herbs, there are cases where Chenpi (Citrus reticulata Peel) is added as an assistant to facilitate qi flow.) It regulates the middle jiao and opens the chest diaphragm. It guides out stagnation and eliminates phlegm. (The general principle for treating phlegm focuses on strengthening the spleen and smoothing qi. Jiegu stated: Chenpi stops vomiting and cough, promotes urination, breaks masses, unblocks the five zang organs, and treats various diseases, all due to its functions of regulating qi and drying dampness. When used in harmonizing formulas, retain the white pith; when used in unblocking formulas, remove the white pith. Removing the white pith yields Juhong (Exocarpium Citri Reticulatae Rubrum), which additionally dispels cold and releases the exterior. (The peel can disperse pathogens at the skin level.) Although its nature is moderate, it also consumes true yuan (original qi). Do not use if there is no stagnation. Those produced in Guangdong are superior. The peel is thick and not brittle, with patterns resembling pig bristles. (Those produced in Fujian are named Jianpi (Jian Chenpi), with weak efficacy; those from Quzhou, Zhejiang, are named Qupi (Quzhou Chenpi), of even poorer quality.) Aged ones are better, hence the name Chenpi (Aged Peel). (Aging reduces the harshness, avoiding risks of excessive drying and dispersion; Banxia (Pinelliae Rhizoma) is similar, so they are often used together, forming Erchen Tang (Two-Aged Decoction).) For treating phlegm-induced cough, soak in children's urine and sun-dry; for treating phlegm accumulation, stir-fry with ginger juice; for targeting the lower jiao, stir-fry with salt water. (Huazhou Chenpi is very effective in resolving phlegm, but its dissolving and attacking power is too severe and should not be used lightly. Moreover, genuine Huazhou Chenpi is extremely rare; most are merely Pomelo peels.)