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For nausea caused by phlegm, heat, or deficiency, ginger can be used in all cases, with additional herbs selected according to the specific syndrome. If vomiting and nausea are caused by fluid retention (Tan Yin), Er Chen Tang (Two-Cured Decoction) should be added with Dingxiang (Caryophylli Flos), Wumei (Mume Fructus), and seven slices of Shengjiang (Zingiberis Rhizoma Recens), then decocted and taken orally. Dai Yun stated: "Nausea" refers to a sensation where there is no sound nor any vomitus expelled, but rather a feeling of wanting to vomit without actually doing so. Although termed "nausea," it is not a disease of the Heart Meridian; the pathology lies above the stomach opening. Ginger is appropriate here because it opens the stomach and resolves phlegm.

Fan Wei (Reversal Stomach / Vomiting due to obstruction) is synonymous with Ge Ye (Diaphragmatic Obstruction); Ge Ye is the initial stage of Fan Wei. In detail, there are approximately four types: Blood Deficiency, Qi Deficiency, Heat, and Phlegm. There are also combined syndromes. In Blood Deficiency, the pulse is rapid yet forceless. In Qi Deficiency, the pulse is slow yet forceless. In combined Qi and Blood Deficiency, excessive saliva flows from the mouth; if large amounts of saliva are seen spurting out, death is inevitable. In Heat syndromes, the pulse is rapid and forceful. In Phlegm syndromes, the pulse is slippery and rapid; these two conditions are treatable. It is further stated that regarding the pulse in Fan Wei: Blood Deficiency manifests as a forceless pulse on the left side; Qi Deficiency manifests as a forceless pulse on the right side; Phlegm manifests as a deep pulse at the Cun and Guan positions, or a hidden yet large pulse. For Blood Deficiency, Si Wu Tang (Four-Substance Decoction) is the primary formula. For Qi Deficiency, Si Jun Zi Tang (Four-Gentlemen Decoction) is primary. For Heat, detoxification is the main approach. For Phlegm, Er Chen Tang is primary. These formulas must be supplemented with Tong Bian (Child's Urine), Jiang Zhi (Ginger Juice), Zhu Li (Bamboo Sap), Jiu Zhi (Chinese Chive Juice), and cattle/sheep milk. If feces resemble sheep droppings, the condition is untreatable. In elderly patients, although difficult to treat, Renshen (Ginseng Radix et Rhizoma) and Baizhu (Atractylodis Macrocephalae Rhizoma) must be used to prevent Qi and Stomach deficiency. If Fan Wei is caused by Yin Fire flaring upward, it should be treated as a Yin Fire syndrome. If caused by Qi stagnation, the pulse at Cun and Guan is deep and choppy; herbs that open stagnation and guide Qi should be used. If there is accumulated blood stasis internally, the condition should be assessed and guided accordingly. If stool is dry and difficult to pass, the prognosis is poor; frequent consumption of rabbit meat may facilitate bowel movement. For Fan Wei in patients with excess phlegm and abundant fire, first induce vomiting using Gua Di San (Melon Sepal Powder), followed by a pill made from Dahuang (Rhei Radix et Rhizoma), Zaojiao (Gleditsiae Sinensis Spina), Hei Qian Niu (Pharbitidis Semen Nigrum), and Puxiao (Natrii Sulfas), powdered and bound with paste, taken with ginger water (15 pills). Another prescription for Fan Wei with accumulated fluids uses Yi Yuan San (Benefit the Origin Powder) universally, formed into pills using the clarified sediment of ginger juice, taken frequently. Another prescription uses Huanglian (Coptidis Rhizoma), Zhuyu (Evodiae Fructus), fried Beimu (Fritillariae Bulbus), Gualou (Trichosanthis Fructus), Chenpi (Citri Reticulatae Pericarpium), Baizhu, Zhishi (Aurantii Fructus Immaturus), and Niuzhuancao. If there is a sensation of blockage upon swallowing, difficulty turning the neck and back, inability to stretch or yawn comfortably, resembling Ge Ye, with inability to eat and prior heart pain accompanied by generalized jaundice during pain episodes, first induce vomiting of two bowls of phlegm using Chuanxiong (Ligustici Chuanxiong Rhizoma), Jiegeng (Platycodonis Radix), Shanzhi (Gardeniae Fructus), fine tea, and vinegar made from fresh ginger. Then use Dao Tan Tang (Guide Out Phlegm Decoction) added with Qianghuo (Notopterygii Rhizoma et Radix), Huangqin (Scutellariae Radix), and Honghua (Carthami Flos); this method is suitable for robust individuals. An elderly patient with Fan Wei was treated with Gualou, Beimu, Baizhu, Chenpi, Zhuyu, Huanglian, Sheng Gancao (Raw Glycyrrhizae Radix et Rhizoma), Renshen, Fuling (Poria), and Zhishi. Younger patients should use Si Wu Tang to clear the stomach cavity; blood dryness fails to moisten the intestines, causing constipation, as detailed in *Ge Zhi Yu Lun* (Supplements to the Investigation of Things). Bin Lian Wan (Areca and Coptis Pill) treats Fan Wei characterized by eating in the morning and vomiting in the evening, vomiting immediately after swallowing, epigastric pain, relief only after complete vomiting, or vomiting upon seeing food: Baizhu, Huanglian, Sharen (Amomi Fructus Rotundus), Chenpi, Banxia Qu (Pinelliae Fermentatum), Shenqu (Massae Medicatae Fermentatae), Pengzhu (Curcumae Longae Rhizoma) (each 1 liang), Huoxiang (Agastaches Herba), Binglang (Arecae Semen), Qingpi (Citri Reticulatae Pericarpium Viride), Dingxiang, Mai (likely Maidong or Maiya, text unclear), Sanleng (Sparganii Rhizoma), Jianghuang (Curcumae Longae Rhizoma), Liangjiang (Alpiniae Officinarum Rhizoma), Baidoukou (Cardamomi Fructus), Fuling, Guihua (Osmanthi Flos), Lianqiao (Forsythiae Fructus), Shanzha (Crataegi Fructus) (each 5 qian), Chuan Fu (Semi Aconiti Lateralis Radix Praeparata), Zhuyu (2 qian). Grind these into powder, bind with ginger paste into pills. Take 70–80 pills per dose with ginger water or plain water, three times daily. A young, robust man with Fan Wei was treated with Yi Yuan San added with Chenpi, Banxia, and Shengjiang, soaked in natural juices, dried, powdered, and taken mixed with Zhuli and Sugarcane Juice. A patient who could only swallow one spoonful of porridge, feeling a piece of vegetable stuck in the diaphragm preventing further ingestion, unable to swallow fish or meat, subsisting only on thin porridge, with normal daily activities, was treated with Liang Ge San (Cool the Diaphragm Powder) added with Jiegeng. If the face often feels hot and stool is constipated, this indicates dry phlegm obstructing the throat and diaphragm; add Bai Mi (Honey) to drink. This treats Fan Wei before the stomach cavity becomes dry and atrophic. A young man would vomit several mouthfuls after eating, though not completely, with sounds emanating from the diaphragm; his complexion was normal. The pathology was not in the Spleen or Stomach but in the diaphragm. Inquiry revealed he ate noodles while still angry. Severe anger causes blood to stagnate upward, accumulating in the diaphragm, hindering the ascending and descending of Qi. Fluids gather into phlegm and fluids, which contend with blood, causing noise. After taking Er Chen Tang added with Xiangfu (Cyperi Rhizoma), Laifu (Radish Seed), and Jiu Zhi for one day, he was induced to vomit using Gua Di San and sour plum water. On the second day, another vomiting episode occurred, expelling a cup of bloody phlegm. On the third day, another cup of blood was expelled, after which he recovered. A middle-aged man suffered epigastric pain and vomiting after eating, with a purplish-frost complexion and a choppy Guan pulse, indicating a blood disorder following a fall. He was administered a blood-regulating formula promoting new generation and eliminating old stasis, vomiting about a bowl of blood before recovering. A woman suffered from seven emotions affecting her health, feeling a cotton-like mass in the throat that could neither be spat out nor swallowed, along with pain in the hypochondrium and epigastrium, reduced appetite, and a pregnancy of three months. She was treated with Xiangfu, Sharen, Fuling, Chenpi (each 2 qian), Maidong (Ophiopogonis Radix), Nongpo (Magnoliae Officinalis Cortex), Baizhu, Renshen, Gancao (each 5 fen), Zhike (Aurantii Fructus), Shaoyao (Paeoniae Radix Alba), Baidoukou (each 8 fen), Zhuru (Bambusae Caulis in Taeniae, 2 qian), and Shengjiang (5 slices) decocted. If heart pain persists, add Caodoukou (Alpiniae Katsumadai Semen). A patient previously suffering from Ge Ye ate mutton, exacerbating the condition and causing acid regurgitation. He was treated with Er Chen Tang added with Cangzhu (Atractylodis Rhizoma), Baizhu, Xiangfu, Sharen, Zhike, Zhuyu, Huanglian, Shenqu, and Shengjiang decocted. Later, when tenesmus developed, Muxiang (Aucklandiae Radix) and Binglang were added. Phlegm-Qi nodules in the throat that cannot be expectorated are caused by the seven emotions. When Phlegm-Fire flares upward causing chest and diaphragm discomfort, Er Chen Tang is added with Xiangfu, Sharen, Gualou, Baizhu, Nongpo, Suzi (Perillae Fructus), Huanglian, Zhuyu, Zhike, and Shengjiang decocted. Add Qianhu (Peucedani Radix) for dizziness. Excessive appetite leading to Diaphragmatic Qi should be treated as fixed blood stasis: Er Chen Tang added with Danggui (Angelicae Sinensis Radix), Taoren (Persicae Semen), Xiangfu, Sharen, Baizhu, Zhishi, Huoxiang, Jianglian (Coptis stir-fried with ginger), Dingxiang if vomiting persists. Before administration, add small amounts of Jiu Zhi, Jiang Zhi, and Zhuli; adding cow milk is especially beneficial. A patient with Phlegm-Fire obstruction and chest discomfort was treated with Er Chen Tang added with Zisu (Perillae Folium), Nongpo, Xiangfu, Sharen, Jianglian, Muxiang, Binglang, Baidoukou, Zhuyu, and Shengjiang decocted. For vomiting with chest/diaphragm pain, Er Chen Tang is added with Jianghuang, Xiangfu, Sharen, Dingxiang, Huoxiang, Baizhu, Baidoukou, Zhike, and Jianglian. For heart/abdominal pain and acid regurgitation, remove Zhike and add Zhuyu. For fever, remove Zhike and Zhuyu, add Gan Ge (Puerariae Radix), Zhuru, Pipaye (Loquat Leaf stir-fried with ginger). For severe heat, add Lianqiao Ren (Forsythiae Semen) stir-fried with ginger.