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Predecessors had the concept of "Yin-Deficiency Summer-Lethargy" (Yin Xu Zhu Xia), and I have further created the theory of "Yang-Deficiency Autumn-Lethargy" (Yang Xu Zhu Qiu). Upon recent observation of illnesses in the world, there seems to be a condition that can be named "Winter-Lethargy" (Zhu Dong). It is common to see individuals who, upon entering the winter season, immediately experience rapid breathing with excessive phlegm, coughing and wheezing, inability to tolerate wind, and inability to sleep flat. After the fifth watch (around 1-3 AM), they must sit upright; their complexion is sallow and yellow, with edema on the cheekbones and cheeks, soreness in the legs, distension in the back, and inconvenience in movement. Their diet and bowel/bladder functions are generally normal, though they may also present with dark, scanty urination or loose stools. The condition gradually subsides only when the weather warms up after the Spring Equinox. This arises from a dual deficiency of Spleen and Kidney Yang, where Water Pathogens from the Kidney overflow upward into the Lung, and Damp Pathogens from the Spleen flow downward into the Kidney. Upper and lower Jiao are filled with turbid Yin of damp-heat, depressing the Liver Yang's nature of dispersal and promotion, preventing it from unfolding smoothly. When the eyelids are swollen, it indicates stagnation of Spleen Qi; when the eyes appear protruding and lack spirit, it indicates stagnation of Liver Qi. Therefore, one must wait until the Wood Qi (Liver Qi) has been in command for a long time before the Liver Qi can ascend, thereby venting Kidney pathogens and awakening Spleen Yang. This resembles the syndrome described in the *Nei Jing* (Inner Canon): "Injury by dampness in autumn leads to cough in winter." However, injury by dampness refers to a new-onset disease, whereas this condition recurs annually, manifesting at specific times, resembling a chronic stubborn disease. How can it not be called "Winter-Lethargy"? Zhu Danxi stated: "Those who suffer from cough and asthma every winter are affected by seasonal cold binding internal heat; if internal heat is drained in the preceding autumn, so that when cold arrives there is no heat to bind, then asthma will not occur." This refers to this very syndrome. Yet, the theory of "draining heat" remains debatable. Although this condition involves internal damp-heat, its root cause is actually weak Yang Qi, with cold-damp lingering on the exterior, causing the Triple Burner (San Jiao) to fail in diffusion, thereby accumulating into phlegm-heat. Although there are no obvious exterior signs, it is truly caused by exterior pathogens. The treatment method should employ bitter and bland herbs to clear the interior, and acrid-warm herbs to disperse the exterior. Bitter-bland formulas include Er Miao San (Two Marvels Powder) and Wei Ling Tang (Stomach Cinnamon Decoction); acrid-warm formulas include Jing Fang Bai Du San (Schizonepeta and Saposhnikovia Decoction to Overcome Toxins) and Chong He Tang (Harmonizing Decoction). Ancient practitioners used Yue Bi Ban Xia Tang (Yuebi Pinellia Decoction), combining Ephedrae Herba (Mahuang, 麻黄) and Gypsum Fibrosum (Shigao, 石膏), which is highly appropriate. If the disease has persisted for years, with phlegm-saliva becoming tenacious and fixed, and cold-damp penetrating deeply into sinews and bones, then only Hai Fu Shi (Pumice), Hai Ge Fen (Clam Shell Powder), Wa Leng Zi (Arca Shell), Ostreae Concha (Muli, 牡蛎), Zao Sha Zha (Fried Hawthorn Fruit), Persicariae Semen (Taoren, 桃仁), Haematitum (Zheshi, 赭石), and Qing Shi (Calamine) can purge the phlegm; only Xi Xin (Asarum), Qiang Huo (Notopterygii Rhizoma et Radix), Bai Zhi (Angelicae Dahuricae Radix), and Ge Gen (Puerariae Lobatae Radix) can attack the exterior pathogens; only Huang Bo (Phellodendri Cortex), Ce Bai Ye (Biota Top Leaf), Long Dan Cao (Gentianae Radix), Chai Hu (Bupleuri Radix), and Ku Shen (Sophorae Flavescentis Radix)—all extremely bitter and cold—can drain turbidity and strengthen the foundation. Furthermore, it is advisable to take modified prescriptions extensively during summer, taking advantage of the season when Yang Qi is diffusing, so that no pathogenic factors remain in the sinews, bones, and interstices, and no latent dampness lingers in the intestines, stomach, and Triple Burner. Thus, Yin pathogens will drain downward, True Yang will充盈 (fill) outward, the Chest Center (Dan Zhong, 膻中) will be peaceful, and all parts of the body will feel comfortable. For tonifying medicines, only Tu Si Zi (Cuscutae Semen), Du Zhong (Eucommiae Cortex), Muli (Ostreae Concha, 牡蛎), and Hai Piao Xiao (Sepiae Endoconcha) are suitable; their bitter-astringent and salty-warm properties stabilize and secure Kidney Qi. One should avoid using Sheng Jiang (Zingiberis Rhizoma Recens, 生姜) and Rou Gui (Cinnamomi Cortex, 肉桂) as their acrid-hot nature burns Yin. One must also avoid using Cheng Qi Tang (Order the Qi Decoction) or Xiong Xiong Tang (Chest-Crushing Decoction) to heavily purge and damage the True Qi of the Spleen and Kidney. If Su Ye (Perillae Folium) and Xing Ren (Prunus Armeniacae Semen) are used to direct Qi downward, it will deplete Qi and cause upper deficiency; if Cang Zhu (Atractylodis Rhizoma) and Bai Zhu (Atractylodis Macrocephalae Rhizoma) are used to tonify the Spleen, they will aid the pathogen and cause central fullness.