服之令人不饥长年，美颜色，人有急难阻绝之处用之，如龟、蛇服气不死，阳陵子
明经言∶春食朝露，日欲出时向东气也；秋食飞泉，日没时向西气也；冬食沆瀣，北方夜半
气也；夏食正阳，南方日中气也。并天玄地黄之气，是为六气。亦言平明为朝露，日中为正
阳，日入为飞泉，夜半为沆瀣，及天地玄黄为六气。皆令人不饥，延年无疾者。人有堕穴中
，穴中有蛇，蛇每日作此气服之。其人既见蛇如此，根据蛇时节，饥时便服。又即仿蛇，日日
如之，经久渐渐有验，即体轻健，似能轻举，启蛰之后，人与蛇一时跃出焉。
洗疮疥，灭瘢痕。入酱令易熟，沾衣便腐，浣垢如灰汁，有异佗水。江淮以南，地
气卑湿，五月上旬连下旬尤甚。月令土润溽暑是五月中气，过此节以后，皆须曝书。汉·崔
实七夕曝书，阮咸焉能免俗，盖此谓也。梅沾衣，皆以梅叶汤洗之脱也，余并不脱。
味甘，平，无毒。主心腹痛，疰忤鬼气邪秽之属，并就泉空腹饮之。时代升平，则
醴泉涌出，读古史大有此水，亦以新汲者佳。止热消渴及反胃，腹痛，霍乱为上。
Ingesting it causes one not to feel hungry and promotes longevity, beautifying the complexion. It can be used when a person is in urgent distress or trapped in isolation, similar to how turtles and snakes achieve immortality by ingesting Qi (vital energy). Yanglingzi
Mingjing stated: In spring, consume morning dew at dawn; this is the Qi of the east before sunrise. In autumn, consume flying springs (flowing water) at sunset; this is the Qi of the west after sunset. In winter, consume hangxie (nighttime mist/dew); this is the Qi of the north at midnight. In summer, consume zhengyang (midday sunlight Qi); this is the Qi of the south at noon. These are combined with the Qi of Tianxuan Dihuang, forming the "Six Qis." Another view holds that pingming (daybreak) is morning dew, rizhong is zhengyang, riru is feiquan, yeban is hangxie, along with Tiandi Xuanhuang, constituting the Six Qis. All of these enable one to remain without hunger, extend life, and avoid disease. A person fell into a cave containing snakes, which consumed Qi daily in this manner. Upon seeing the snake's behavior, the person imitated the snake according to the seasons, consuming it when hungry. Continuing to mimic the snake daily, gradual efficacy was observed over time; the body became light and vigorous, seemingly capable of levitation. After Jingzhe (Awakening of Insects), both the person and the snake leaped out of the cave simultaneously.
Washes sores and scabies, eliminates scars. When added to sauce, it makes food cook easily; if it stains clothes, it causes rotting. Washing dirt off with it is like using lye ash water, differing from other waters. South of the Jianghuai region, the terrain is low and damp, especially severe from early to late May. The *Yueling* (Monthly Ordinances) states that "earth moist and muggy heat" occurs during the middle Qi of May. After this solar term, books must be sun-dried. Cui Shi of the Han Dynasty sun-dried books on the Qixi Festival; Ruan Xian could not escape custom, referring to this practice. Plum stains on clothes can only be removed with plum leaf decoction; others cannot be removed.
Sweet flavor, neutral nature, non-toxic. Primarily treats epigastric and abdominal pain, zhuwu (wandering pestilence), ghostly Qi, and evil filth. One should face a spring and drink it on an empty stomach. During times of peace and prosperity, liquan (sweet springs) gush forth. Ancient histories record much about this water; newly drawn water is considered best. For stopping heat-induced thirst, regurgitation, abdominal pain, and cholera-ruin, it is superior.
Sweet flavor, neutral nature, non-toxic. Primarily treats various heat syndromes in the chest and diaphragm, brightens the eyes, and stops thirst. Grows in the remote regions of Baxi, resembling maltose. Emperor Wu of Han established golden pillars and made cactus-shaped dew-catching plates to collect dew from the clouds, ingesting it to seek immortality.
Cold nature, non-toxic. Tuan shi zhe (a specific form/preparation): primarily resolves alcohol-induced heat, nasal congestion due to Shanghan (cold damage), and facial redness with various heats after drinking alcohol.