禀水气以生。《洪范》∶润下作咸。《素间》谓∶水生咸。此盐之根源也。寒咸无
毒，气薄味浓，阴也，降也。入足少阴，也入手少阴、足阳明、手太阴、阳明经，为清
热除湿解毒软坚润下之剂也。戎盐一名青盐，一名胡盐，禀水中至阴之气凝结而成，
不经煎炼。生于涯 之阴，其味咸，气寒无毒，入手足少阴经。《经》曰∶“热淫于
内，治以咸寒”，以咸寒之味，故能助水益精、除热止痛、软坚破结、明目擦牙之用。
青盐一斤，槐枝半斤，水四碗煎汁二碗，煮盐至干，炒研，日用措齿洗目最妙。太阴玄
精石，出于盐卤之地，及至阴之精，凝结而成，故其形皆六出，象老阴之数也。其色青
白，龟背者良。味盐，气温，无毒，以咸软温散润下之性，故为积聚湿痹头痛，漏下益精之需。
食盐，炒化汤中，堪洗下部 疮，能吐中焦痰癖，苏心腹卒痛，塞齿缝来红，洗目
可除风淫暴赤之邪，探吐以疗霍乱绞肠之患，驱蚯蚓毒伤，杀鬼虫邪疰。少用引药入
肾，过多喜咳伤金，走血损筋，黑肤失色，或引痰生，或凝血脉，或助水邪，所谓过食
盐能伤肾也。水肿咳嗽病患须全禁忌勿服，故西北人，不耐咸，少病多寿；东南人嗜盐
少寿多病。修养家以淡食能多补耳。
戎盐，一名青盐。益气去气蛊，明目却目疼，止吐衄血，坚筋骨节，助水脏，益精
气，除邪热，心腹作痛，去五脏 结积聚。外洗风眼烂弦，内擦风热牙痛。
玄精石，止头疼，益精气心腹积聚，冷气能逐，风冷邪气湿痹可除，理男子阴症伤
寒，止妇人痼冷漏下。
盐禀受水的性质而生。《尚书·洪范》中说：“水向下流动，其味为咸。”《黄帝内经·素问》认为：“水生咸味。”这是盐的根源所在。盐性寒、味咸，无毒，气味轻薄而味道浓厚，属于阴，具有沉降的特性。它入足少阴肾经，也入手少阴心经、足阳明胃经、手太阴肺经和手阳明大肠经，是清热、除湿、解毒、软坚散结、润下通便的药物。
戎盐又名青盐、胡盐，禀受水中至阴之气凝结而成，不经过煎炼加工。生长在河岸等潮湿阴暗之处，味道咸，气寒，无毒，入手足少阴经。《内经》说：“热邪蕴结于内，用咸寒之品治疗”，凭借咸寒的味道，所以能助水益精、除热止痛、软坚破结、明目及擦牙的功效。取青盐一斤，槐枝半斤，加水四碗煎至两碗汁液，将盐煮至干燥，炒后研末，每日用来刷牙洗眼效果最好。
太阴玄精石，出产于盐卤之地，是极阴之精气凝结而成，所以它的形状都是六角形，象征老阴之数。颜色青白，背面有龟背纹者品质优良。味道咸，气温，无毒，凭借咸能软坚、温能散寒、润能通便的性质，所以是治疗积聚、湿痹、头痛，以及漏下（非经期阴道出血）以益精气的所需药物。
食盐，炒化后溶于汤中，可以清洗下部疮疡，能催吐中焦痰癖，缓解心腹突发疼痛，塞入齿缝可止牙龈出血，洗眼可去除风邪引起的急性红肿，探喉催吐可治疗霍乱导致的肠绞痛，驱除蚯蚓毒伤，杀灭鬼虫邪疰。少量使用可引药入肾，过多则易引起咳嗽损伤肺气，耗血损筋，使皮肤变黑失去光泽，或生痰，或凝滞血脉，或助长水邪，这就是所说的过食盐能伤肾的原因。水肿、咳嗽患者必须完全禁忌服用。所以西北人不耐受咸味，生病少且长寿；东南人嗜好咸味，生病多且短寿。养生家认为清淡饮食能更好地补益身体。
戎盐，又名青盐。能益气、去除气蛊，明目、消除眼痛，止住吐血、衄血，坚固筋骨关节，助益肾脏，补益精气，清除邪热，治疗心腹疼痛，去除五脏结聚形成的积块。外用清洗风眼烂弦症，内服擦拭治疗风热牙痛。
Salt is generated by inheriting the nature of Water. The *Book of Documents: Hong Fan* states: "Water flows downward, and its taste is salty." The *Huangdi Neijing: Suwen* (Yellow Emperor's Inner Canon: Basic Questions) posits: "Water generates saltiness." This is the origin of salt. Salt is cold in nature and salty in flavor, non-toxic. Its qi is thin while its flavor is strong; it belongs to Yin and has a descending property. It enters the Foot-Shaoyin Kidney Meridian, as well as the Hand-Shaoyin Heart Meridian, Foot-Yangming Stomach Meridian, Hand-Taiyin Lung Meridian, and Hand-Yangming Large Intestine Meridian. It serves as an agent for clearing heat, removing dampness, detoxifying, softening hardness, dissipating nodules, and promoting bowel movements.
Rongyan (Military Salt), also known as Qingyan (Green Salt) or Huyan (Hu Salt), is formed by the condensation of the most extreme Yin energy within water, without undergoing refining processes. It grows in the shady areas of riverbanks. Its flavor is salty, its nature is cold, and it is non-toxic. It enters the Hand- and Foot-Shaoyin meridians. The Classics state: "When heat floods internally, treat it with salty-cold substances." Due to its salty-cold flavor, it can assist water to benefit essence, remove heat and relieve pain, soften hardness and break up accumulations, brighten the eyes, and be used for brushing teeth. Take one jin of Qingyan, half a jin of Huai branch, add four bowls of water, and decoct until two bowls of juice remain. Boil the salt until dry, stir-fry, and grind into powder. Using this daily to brush teeth and wash the eyes is excellent.
Taiyin Xuanjingshi (Xuanjing Stone of Taiyin) originates from saline lands. It is formed from the essence of extreme Yin condensing together; thus, its shape is invariably hexagonal, symbolizing the number of Old Yin. Its color is blue-white, and those with a tortoise-shell pattern on the back are of superior quality. Its flavor is salty, its nature is warm, and it is non-toxic. Relying on its properties of softening hardness via saltiness, dispersing via warmth, and moistening/descending, it is required for treating accumulations, damp-bi syndrome, headaches, and leukorrhea (abnormal vaginal discharge) to benefit essence.
Shiyan (Table Salt), when fried and dissolved in soup, can be used to wash sores in the lower body. It can induce vomiting to expel phlegm-stagnation in the middle jiao, relieve sudden heart and abdominal pain, be inserted into tooth gaps to stop bleeding gums, and wash the eyes to eliminate pathogens causing acute wind-induced redness. Probing the throat to induce vomiting treats the intestinal colic of cholera. It drives out earthworm poison injuries and kills ghost-worms and epidemic diseases. In small doses, it guides herbs into the Kidney; however, excessive use tends to cause coughing and damage the Metal element (Lungs). It depletes blood, damages tendons, darkens the skin, causes loss of luster, may generate phlegm, coagulate blood vessels, or exacerbate water pathologies. This is what is meant by saying that excessive salt consumption injures the Kidneys. Patients with edema and cough must strictly avoid taking it. Therefore, people in the Northwest cannot tolerate salty food, suffer fewer illnesses, and live longer; people in the Southeast are fond of salt, suffer more illnesses, and have shorter lifespans. Practitioners of self-cultivation believe that a bland diet can better nourish the body.
Rongyan (Military Salt), also known as Qingyan (Green Salt), benefits Qi, removes Qi-gu (parasitic disease caused by bad air/water), brightens the eyes, relieves eye pain, stops hematemesis and epistaxis, strengthens bones, joints, and tendons, assists the Water organ (Kidney), benefits essence and Qi, removes pathogenic heat, treats heart and abdominal pain, and eliminates accumulations and masses in the Five Zang organs. Externally washed for wind-eye with rotting eyelids; internally rubbed for wind-heat toothache.
Xuanjingshi (Xuanjing Stone) stops headaches, benefits essence and Qi, treats heart and abdominal accumulations, drives away cold qi, removes wind-cold pathogens and damp-bi syndromes, regulates male Yin syndromes and cold damage, and stops chronic cold-induced leukorrhea in women.