即菘菜也。似蔓菁而稍大。种菘不宜于北。犹蔓菁不宜于南。今则南北俱有。性喜烧
土。随地可植。夏末布种。秋末刈苗。冬末采根。春末抽薹。开紫碧花。夏初结子。圆长不
等。遂可布种。根色有红白。形有大小长短不同。（核）有两种。一种八月布。秋冬之交即
可
亦
根
气味辛甘。叶味辛苦。气温平。生啖或捣汁饮之。止消渴宽中。去邪热气。疗鼻衄。制
面毒。解酒毒。同地黄食。涩营卫。令人发白。属土而有金与水。生者下气。熟食则辛散味
去
咸辅
绝妙
并以汁
子
味辛甘。气平。生用主吐风痰。发疮疹。炒熟。下气定喘。治嗽消食。除胀利大小便。
止气痛。下痢后重。治痰有推墙倒壁之功。（丹溪）宣吐风痰。萝卜子半升。擂细。水滤取
汁
萝卜子
急。萝
高年气喘。萝卜子炒。碾末。蜜丸梧子大。每服五十丸。白汤下。风秘气秘。萝卜子
擂水。和皂荚末二钱服。立通。气胀气蛊。莱菔子研。以水滤汁。浸缩砂一两。一
。又浸又炒。凡七次。为末。每米饮服一钱。如神。胀满证甚者。加莱菔子炒一钱。面食
伤。尤宜用。
〔论〕莱菔布种于夏。而归根于冬。抽苗于春。而结子于夏。其根禀火土之气。历金而
宿于
生则
水气。历木令而聚精于
生用则金益火之势。故有
痰则用生。凡炒用者。杀
以气行则痰化乎。讵知
身至液不化血而凝痰。
缪氏。其子消痰下气更速。凡虚弱人忌之。
就是菘菜。形状像芜菁但稍大一些。在北方种植菘菜不太适宜，就像芜菁在南方不适宜种植一样。如今南北各地都有种植。它喜欢疏松的土壤，随地势均可栽种。夏末播种，秋末收割叶片，冬末采挖根部，春末抽薹。开出紫色和碧绿色的花，夏初结籽。种子有圆有长，大小不等，随即可以播种。根的颜色有红色和白色，形状有大、小、长、短的不同。（考据）有两种类型，一种在八月播种，秋冬之交即可收获。
气味辛甘。叶子的味道辛苦。药性气温平。生吃或捣汁饮用，能止消渴、宽中理气，去除邪热之气，治疗鼻出血，抑制面食引起的毒气，解酒毒。与地黄同食，会使营卫之气涩滞，使人头发变白。莱菔属土而兼具金与水的气化特性。生用能下气，熟食则辛散之味减弱，咸味辅助发挥功效。
萝卜子（莱菔子）味道辛甘，药性平。生用主要用来催吐风痰，诱发疮疹；炒熟后能下气定喘，治疗咳嗽、消食导滞，消除胀满，通利大小便，停止气痛，治疗痢疾里的急迫感（后重）。治疗痰证有推墙倒壁般的显著功效。（朱丹溪认为）莱菔子能宣吐风痰。取半升萝卜子，研磨细碎，加水过滤取汁。
对于高龄老人的气喘，将萝卜子炒制后碾成粉末，用蜂蜜制成梧桐子大小的丸剂，每次服用五十丸，白开水送服。对于风秘（风邪导致的便秘）和气秘（气滞导致的便秘），将萝卜子研磨成水浆，混合皂荚末二钱服用，立即通畅。对于气胀、气蛊（腹部胀大如鼓），将莱菔子研碎，用水过滤取汁，浸泡缩砂仁一两，浸后再炒，如此反复七次，最后研成粉末，每次用米饮送服一钱，效果如神。对于胀满证严重的患者，加入炒过的莱菔子一钱。如果是面食损伤引起的病症，尤其适宜使用。
〔论述〕莱菔在夏季播种，冬季归根，春季抽苗，夏季结籽。其根部禀受火土之气，历经金令而宿于水气，历经木令而聚精于……生用时则金益火之势，所以……有痰则用生品。凡是炒用的，是为了杀……以气行则痰化乎？哪里知道……身体津液不化为血而凝结成痰。缪氏认为，其子消痰下气的速度更快，凡是虚弱的人应当忌用。
It is also known as Songcai (Chinese cabbage). It resembles turnip but is slightly larger. Planting Songcai is not suitable in the North, just as turnip is not suitable in the South. Now it is grown in both regions. It prefers loose soil and can be planted anywhere. Seeds are sown at the end of summer, leaves are harvested at the end of autumn, roots are dug up at the end of winter, and stalks sprout at the end of spring. It opens purple and green flowers, and bears seeds in early summer. The seeds vary in roundness and length, size and shape, allowing for immediate sowing. The roots have red or white colors, and shapes varying in large, small, long, and short. (Textual research) There are two types; one type is sown in August and can be harvested between autumn and winter.
The flavor is pungent and sweet. The leaf flavor is pungent and bitter. The nature is warm and neutral. Eating raw or drinking the pressed juice stops thirst (Xiaoke), soothes the middle jiao, eliminates pathogenic heat, treats epistaxis, counters the toxicity from wheat flour foods, and resolves alcohol toxicity. Consumed with Rehmanniae Radix (Shu Di Huang), it causes stagnation of Ying and Wei, leading to premature graying of hair. It belongs to Earth but possesses the qualities of Metal and Water. Raw usage directs Qi downward; cooked usage reduces its pungent dispersing quality, while salty flavors assist its action.
Radish Seed (Laifuzi) has a pungent and sweet flavor and a neutral nature. Used raw, it primarily induces vomiting to expel Wind-Phlegm and triggers sores/rashes. Stir-fried, it directs Qi downward, calms asthma, treats cough, aids digestion, removes distension, promotes urination and defecation, stops Qi-type pain, and treats tenesmus in dysentery. In treating Phlegm, it has remarkable efficacy akin to "pushing down walls and toppling towers." (Zhu Danxi stated) Laifuzi can vent and expel Wind-Phlegm. Take half a sheng of Laifuzi, grind finely, add water, filter, and take the juice.
For asthma in the elderly, stir-fry Laifuzi, grind into powder, make pills the size of wutong seeds with honey. Take 50 pills each time, washed down with plain boiled water. For Wind-obstipation (Fengmi) and Qi-obstipation (Qimi), grind Laifuzi into a liquid mixture, combine with 2 qian of Gleditsiae Sinensis Fructus (Zaojia) powder, and take immediately for unobstructed passage. For Qi-distension and Qi-gu (abdominal distension like a drum), grind Laifuzi, filter juice with water, soak Amomi Fructus (Suosha) for one liang, soak then stir-fry, repeating this process seven times. Finally, grind into powder. Take one qian with rice drink each time; the effect is miraculous. For severe distension syndromes, add one qian of stir-fried Laifuzi. This is especially suitable for injuries caused by consuming wheat-based foods.
[Discussion] Laifuzi is sown in summer and returns to the root in winter; shoots emerge in spring and bear fruit in summer. Its root inherits the Qi of Fire and Earth, passes through Metal, and resides in Water Qi, gathering essence during the Wood season. When used raw, it enhances the Fire aspect of Metal; therefore... if there is Phlegm, use the raw form. Those that are stir-fried are used to kill/reduce [pungency/toxicity]. Does Qi movement transform Phlegm? One might ask... Body fluids fail to transform into Blood and instead congeal into Phlegm. Mu Shi believed that its seed transforms Phlegm and directs Qi downward even faster. Therefore, those with deficiency should avoid it.