解毒杀虫。
宜造疟痢、疮疡、金疮、百虫、蛊毒诸丹丸。用此水煎杀祟药，其效尤神。
消积清热。
甘寒。治心腹积聚及虫病。和獭肝为丸服。又饮之。清热化痰。定惊安神。（金门记云∶
五
月五日、午时有雨、急伐竹竿中、必有神水、沥取为药。以上三月水、大抵能助湿热、不
宜贮之。）
润肺。
宜煎整肃肺气之药。（湿热渐退、得秋金清肃下行之气、可多贮之。）
有毒，坏禾稻。（谚云∶寒露雨、偷稻鬼。）人饮之。多致疾。与小满水同。
杀虫消积。
宜煎杀虫消积之药。（立冬后十日为入液、至小雪为出液、得雨谓之液雨、亦曰药雨、
百虫
饮此皆伏蛰、至来春雷鸣起蛰、乃出也。）
泻热。
宜浸造滋补五脏及痰火、积聚、虫毒诸丹丸。并煮酿药酒。与雪水同功。（时珍以贮水
于二
十四节气、因天地之气候相感、水之气味随之变迁、故以节气水入地水类、洛谓不然、毕竟
天雨水、感天地之气候为尤准、今入天水类、庶可按时令而择用之尔。）
一名方诸水。补阴。
甘寒。主治明目。定心止渴。去小儿烦热。（时珍曰∶明水者、取其清明纯洁、敬之至
也、
周礼司 氏、以夫燧取明火于日、鉴取明水于月、以供祭祀、魏伯阳参同契云∶阳燧以取火
、非日不生光、方诸非星月、安能得水浆、淮南子云∶方诸见月、则津而为水、注者或以方
诸为石、或以为大蚌、或以为五石炼成、皆非也、按考工记云∶铜锡相半、谓之鉴燧之剂、
是火为燧、水为鉴也、高堂隆云∶阳燧一名阳符、取火于日、阴燧一名阴符、取水于月、并
以金作之、谓之水火之镜、此说是矣、搜神记云∶金锡之性一也、午月丙午日午时铸、为阳
燧、子月壬子日子时铸、为阴燧。）
Detoxifies and kills parasites.
Suitable for preparing various pills and electuaries to treat malaria, dysentery, sores and ulcers, metallic wounds (injuries caused by metal weapons), bites from various insects, and gu poison. Using this water to decoct herbs that expel evil spirits and kill malevolent entities yields particularly miraculous effects.
Eliminates accumulation and clears heat.
Sweet in taste and cold in nature. Treats accumulations and masses in the heart and abdomen, as well as parasitic diseases. Mix with liver of the otter (Lutra lutra) to form pills for oral administration. It can also be drunk directly. Clears heat, transforms phlegm, calms fright, and soothes the spirit. ("Jinmen Ji" records: On the fifth day of the fifth lunar month at noon, if it rains, one should hastily cut down the middle section of bamboo poles; there will surely be divine water flowing out, which can be collected for medicinal use. The rainwater mentioned above from the third lunar month generally tends to assist damp-heat and is not suitable for storage.)
Moistens the lungs.
Suitable for decocting herbs that regulate the descending function of Lung Qi. (As damp-heat gradually recedes and one receives the clear, descending energy of Autumn Metal, this water can be stored in large quantities.)
Toxic; damages crops. (A proverb says: Rain during Cold Dew is brought by rice-stealing ghosts.) Human consumption often leads to illness. Its nature is similar to that of rainwater during the Grain Buds solar term.
Drains heat.
Absorbs the killing energy of Heaven and Earth. Only those with excess Yang Qi are suitable for using this water to decoct medicines.
Kills parasites and eliminates accumulation.
Suitable for decocting herbs that kill parasites and eliminate accumulation. (Ten days after Start of Winter is "Ru Ye" [entering liquid state]; until Minor Snow is "Chu Ye" [exiting liquid state]. Rain falling during this period is called "Ye Yu" [Liquid Rain] or "Yao Yu" [Medicinal Rain]. All insects drink this rain and then hibernate. They emerge only when spring thunder awakens them.)
Drains heat.
Suitable for soaking and preparing pills and electuaries that tonify the five Zang organs and treat phlegm-fire, accumulations, and insect poisons. It is also used to brew medicinal wines. Its efficacy is the same as that of snow water. (Li Shizhen believed that storing water according to the twenty-four solar terms was due to the mutual resonance between heaven-earth climate and the changing flavor of water, thus classifying solar term water under terrestrial waters. Wu Yiluo disagreed, arguing that heavenly rainwater resonates more accurately with heaven-earth climate. Therefore, it is now classified under heavenly waters, allowing for selection based on seasonal timing.)
Also known as Fangzhu Water. Tonifies Yin.
Sweet in taste and cold in nature. Mainly treats brightening the eyes. Calms the Heart, relieves thirst, and removes vexatious heat in children. (Li Shizhen stated: Ming Shui [Bright Water] takes its name from clarity and purity, showing utmost reverence. In "Zhou Li - Si Xuan Shi", the Yang Sui [Bronze Mirror for Fire] extracts fire from the sun, and Fangzhu [Bronze Mirror for Water] extracts water from the moon, for sacrificial purposes. Wei Boyang's "Can Tong Qi" states: Yang Sui is used to extract fire; without the sun, there is no light. Fangzhu cannot produce water unless facing stars or the moon. "Huainanzi" states: When Fangzhu sees the moon, it condenses into water. Some believe Fangzhu is a stone, others say it is a large clam, or made from refined five stones; all are incorrect. Examining "Kaogong Ji": Copper and tin mixed equally constitute the material for Jian Sui. Fire corresponds to Sui, water corresponds to Jian. Gao Tanglong said: Yang Sui is also called Yang Fu, extracting fire from the sun; Yin Sui is also called Yin Fu, extracting water from the moon. Both are made of metal and called mirrors of water and fire. This theory is correct. "Soushen Ji" states: The nature of gold and tin is identical. Cast on Bingwu day of Wuyue (Fifth Month) at noon, it is called Yang Sui; cast on Renzi day of Ziyue (Eleventh Month) at midnight, it is called Yin Sui.)