立春节雨水。梅雨水。芒种后逢壬日入梅。小暑后逢壬为出梅。液雨水。立冬后十日入
液。至小雪为出液。得雨谓之液雨。（广笔记）
〔论〕。立春节雨水。宜煎发散及补中益气药。（濒湖） 为其得春升生发之气也。（虞
抟）梅雨水多由湿热之气。郁遏熏蒸。酿为霏雨。人受其气则生病。物受其气则生霉。观此
水不可造酒醋。则梅雨水不宜用矣。（濒湖）液雨水主杀百虫。宜煎杀虫消积药。（又）因此
雨在严冬。百虫际此而伏蛰耳。（又）
淫雨为潦。故雨水降注谓之潦。（濒湖）
气味甘平。宜煎调脾胃去湿热之药。仲景治伤寒瘀热发黄。麻黄连轺赤小豆汤。煎用潦
水。
露水 气味甘平。禀肃杀之气。宜煎润肺杀祟药。及调疥癣虫癞诸散药。百草头上露。
止消
冬至后第三戊为腊。凡花五出。雪花六出。阴之成数也。用净瓶收之。筑实。密封瓶口。
置阴室中。不见日色。气味甘冷。解一切毒。治天行时气瘟疫。小儿热痫狂啼。大人丹石发
动。酒后暴热。黄胆。仍小温服之。宜煎伤寒火 药。抹痱亦良。
流水 千里东流二水。皆堪荡涤邪秽。煎煮汤药。劳水即扬泛水。仲景谓之甘澜水。用
流水二斗。置大盆中。以勺高扬千万遍。有沸珠相逐。乃取煎药。盖水性本咸而体重。劳之
则甘而轻。取其不助肾气而益脾胃也。虞抟云。甘澜水甘温而性柔。煎伤寒阴证等药用之。
顺流水性顺而下流。治下焦腰膝证。及通利二便药用之。急流水其性急速而下达。故通二便
及
Rainwater at the Beginning of Spring. Plum rain. Entering plum rain occurs on a Ren day after the Grain in Ear芒种 solar term. Exiting plum rain occurs on a Ren day after the Minor Heat小暑 solar term. Liquid rain. Entering liquid rain occurs ten days after the Start of Winter立冬 solar term. Exiting liquid rain occurs at the Light Snow小雪 solar term. Rainfall is referred to as liquid rain. (From *Guang Biji*)
[Discussion] Rainwater at the Beginning of Spring is suitable for decocting herbs that disperse the exterior and tonify the middle and benefit Qi. (Li Shizhen) This is because it obtains the ascending and generating Qi of spring. (Yu Bo) Plum rain is mostly formed by damp-heat Qi stagnating, suppressing, steaming, and fermenting into fine rain. When humans are affected by this Qi, they become ill; when objects are affected, they develop mold. Observing that this water cannot be used to brew wine or vinegar, it follows that plum rain should not be used. (Li Shizhen) Liquid rain is primarily effective in killing insects and is suitable for decocting herbs that kill parasites and eliminate accumulation. (Again) This is because this rain falls in severe winter, when hundred insects hibernate during this period. (Again)
Continuous heavy rain is called *liao* (accumulated floodwater), hence rainwater falling and accumulating is called *liao*. (Li Shizhen)
[Liao Water] Flavor: Sweet; Nature: Neutral. Suitable for decocting herbs that regulate the Spleen and Stomach and remove damp-heat. Zhang Zhongjing treated yellowing due to stagnant heat in cold damage using Mahuang Lianqiao Chixiaodou Decoction (Ephedra, Forsythia, and Adzuki Bean Decoction), using *liao* water for decoction.
Dew Flavor: Sweet; Nature: Neutral. It inherits the Qi of肃杀 (severe/cutting). Suitable for decocting herbs that moisten the Lungs and kill parasites, and for compounding powders to treat scabies, tinea, insect bites, and leprosy. Dew on the heads of hundred herbs can stop [polydipsia/eliminate...] (Note: Text appears truncated here).
The third Wu day after the Winter Solstice is La Day. Flowers generally have five petals, snowflakes have six, which represents the completed number of Yin. Collect it in a clean bottle, pack it tightly, seal the mouth, place it in a cool room away from sunlight. Flavor: Sweet; Nature: Cold. Resolves all toxins. Treats epidemic febrile diseases caused by heavenly qi, infantile hot epilepsy with wild crying, adult reactions to mineral drugs (Dan Shi), sudden heat after drinking alcohol, jaundice, etc. It should still be taken warm in small doses. Suitable for decocting herbs for fire constraint in cold damage; applying it to treat prickly heat is also good.
Flowing Water Two waters flowing eastward for a thousand li can both be used to wash away evil filth and decoct herbal medicines. Lao water is also known as Yangfan water, which Zhang Zhongjing calls Ganlan water (Sweet Ripple Water). Take two dou of flowing water, place it in a large basin, and scoop it up high with a ladle thousands of times until bubbles resembling boiling pearls chase each other. Then take this water for decoction. The nature of water is originally salty and heavy; through labor (agitation), it becomes sweet and light. This is done to avoid assisting Kidney Qi and instead benefit the Spleen and Stomach. Yu Bo stated that Ganlan water is sweet, warm, and soft in nature, and is used when decocting herbs for Yin syndromes in cold damage. Water flowing downstream follows the natural downward flow; it is used for treating lower Jiao waist and knee conditions, and for herbs that promote urination and defecation. Rapid-flowing water has a swift and descending nature; therefore, it is used to promote urination and defecation and...