天地以一元之气，化生万物。根于中者，曰神机；根于外者，曰气血。万物同此一气，人灵于物，形与天地参而为
三者，以其得气之正而通也。故气升亦升，气浮亦浮，气降亦降，气沉亦沉。人与天地同一橐 。子月一阳生，阳初动
也；寅月三阳生，阳初出于地也。此气之升也。巳月六阳生，阳尽出于上矣。此气之浮也。人之腹属地气，于此时浮于
肌表，散于皮毛，腹中虚矣。经曰；夏月经满，地气溢满，入经络受血，皮肤充实。长夏气在肌肉，所以表实。表实者，
里必虚。世言夏月伏阴在内，此阴字有虚之义。若作阴冷看，其误甚矣。或曰∶以手扪腹，明知其冷，非冷而何？前人
治暑病，有玉龙丸、大顺散、桂苓丸、单煮良姜与缩脾饮用草果等，皆行温热之剂，何吾子不思之甚也？予曰∶春夏养
阳，王太仆谓春食凉，夏食寒，所以养阳也。其意可见矣！若夫凉台水馆，大扇风车，阴水寒泉，果冰雪凉之伤，自内
及外，不用温热，病何由安？详玩其意，实非为内伏阴而用之也。前哲又谓升降浮沉则顺之，寒热温凉则逆之。若于夏
月火令之时，妄投温热，宁免实实虚虚之患乎？或曰∶巳月纯阳，于理或通，五月一阴、六月二阴，非阴冷而何？予曰∶
此阴之初动于地下也。四阳浮于地上，燔灼焚燎，流金烁石，何阴冷之有？孙真人制生脉散，令人夏月服之，非虚而何？
天地以一元之气，化生万物。根于中者，曰神机（生命活动的内在动力）；根于外者，曰气血。万物同此一气，人灵于物，形与天地参而为三者，以其得气之正而通也。故气升亦升，气浮亦浮，气降亦降，气沉亦沉。人与天地同一橐籥（风箱）。子月一阳生，阳初动也；寅月三阳生，阳初出于地也。此气之升也。巳月六阳生，阳尽出于上矣。此气之浮也。人之腹属地气，于此时浮于肌表，散于皮毛，腹中虚矣。经曰：夏月经满，地气溢满，入经络受血，皮肤充实。长夏气在肌肉，所以表实。表实者，里必虚。世言夏月伏阴在内，此阴字有虚之义。若作阴冷看，其误甚矣。或曰：以手扪腹，明知其冷，非冷而何？前人治暑病，有玉龙丸、大顺散、桂苓丸、单煮良姜与缩脾饮用草果等，皆行温热之剂，何吾子不思之甚也？予曰：春夏养阳，王太仆谓春食凉，夏食寒，所以养阳也。其意可见矣！若夫凉台水馆，大扇风车，阴水寒泉，果冰雪凉之伤，自内及外，不用温热，病何由安？详玩其意，实非为内伏阴而用之也。前哲又谓升降浮沉则顺之，寒热温凉则逆之。若于夏月火令之时，妄投温热，宁免实实虚虚之患乎？或曰：巳月纯阳，于理或通，五月一阴、六月二阴，非阴冷而何？予曰：此阴之初动于地下也。四阳浮于地上，燔灼焚燎，流金烁石，何阴冷之有？孙真人制生脉散，令人夏月服之，非虚而何？
Heaven and Earth generate all things through the Qi of the One Origin. Those rooted within are called Shenji (the intrinsic dynamic mechanism of life); those rooted without are called Qi and Blood. All things share this same Qi. Humans, being superior to other creatures, possess a form that participates with Heaven and Earth to constitute the Three Powers, because they obtain the upright Qi and maintain its unobstructed flow. Therefore, when Qi ascends, humans ascend; when Qi floats, humans float; when Qi descends, humans descend; when Qi sinks, humans sink. Humans and Heaven and Earth function as a single bellows (Tuoyue). In the Zi month, one Yang is born, representing the initial stirring of Yang; in the Yin month, three Yangs are born, representing Yang initially emerging from the earth. This constitutes the ascending phase of Qi. In the Si month, six Yangs are born, meaning Yang has completely emerged above. This constitutes the floating phase of Qi. The human abdomen corresponds to Earthly Qi. At this time, it floats on the muscle surface and disperses into the skin and hair, leaving the interior of the abdomen deficient. The Classics state: "In summer, the meridians are full; Earthly Qi overflows, entering the meridians to receive blood, making the skin firm." During late summer, Qi resides in the muscles, thus causing exterior excess. When the exterior is excess, the interior must be deficient. The world says that in summer, Yin hides within the interior. Here, the character "Yin" carries the meaning of deficiency. If interpreted as coldness or chilliness, the error is significant. Some ask: "By touching the abdomen with the hand, one clearly knows it is cold; how can it not be cold?" Former practitioners treating heatstroke used formulas such as Yulong Wan (Jade Dragon Pill), Dashun San (Great Smooth Powder), Guiling Wan (Cinnamon and Poria Pill), boiled Galangal alone, and Suopi Yin (Spleen-Constricting Drink) containing Caoguo (Rhizoma Tsao-ko), all of which are warming agents. Why do you, Sir, fail to consider this deeply? I reply: Nourish Yang in spring and summer. Wang Taipu stated that eating cool foods in spring and cold foods in summer is the method to nourish Yang. The intent is clear! As for cooling pavilions, water halls, large fans, windmills, cold springs, and icy waters, if these indeed cause injury from cold and ice affecting the body from inside out, without using warming agents, how could the illness be resolved? Examining their intent carefully, these were actually not used because Yin was hiding within the interior. Former sages also said: "For ascending, descending, floating, and sinking, follow them; for cold, heat, warm, and cool, oppose them." If during the summer fire-command period, one recklessly administers warming and hot agents, how can one avoid the danger of reinforcing excess and depleting deficiency? Some ask: "The Si month is purely Yang, which may be logically acceptable. But the fifth month brings one Yin, and the sixth month brings two Yin; is this not Yin coldness?" I reply: This Yin is just beginning to stir underground. Four Yangs float on the ground, burning and scorching, melting metals and cracking stones. Where is there any Yin coldness? Sun Simiao (Sun Zhenren) formulated Shengmai San (Generate Pulse Powder) for people to take in summer. Is this not for deficiency?