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Qian Yi stated: Wind-cold injury (Shang Feng) causing lethargy, hot breath from the mouth, yawning, and dizziness should be treated with dispersing methods, administering Daqing Gao (Great Blue Paste). If it cannot be dispersed and there are excess syndromes in the interior, purgation should be used, administering Dahuang Wan (Rhubarb Pill). If there is excessive thirst and good appetite, mild purgation may be used; otherwise, purgation is contraindicated.

Wind-cold injury causing cold hands and feet indicates Spleen deficiency and timidity; one should first harmonize the Spleen and then disperse. Wind-cold injury causing spontaneous diarrhea indicates Spleen deficiency and timidity; one should harmonize the Spleen.

Wind-cold injury causing abdominal distension indicates Spleen deficiency; tonifying the Spleen will prevent panting. Afterward, disperse the exterior while continuing to tonify the Spleen to remove distension, using Quzhang Taqi Wan (Remove Distension and Regulate Qi Pill).

If wind-cold injury involves the Heart, palpitations and fright occur; if it involves the Lung, chest stuffiness, restlessness, panting, sighing (Geng Qi), long exhalations, and cough occur; if it involves the Kidney, photophobia occurs. These are manifestations of the mother organ's deficiency, so one should tonify the respective mother organ according to the case.

Liver affected by external wind causes yawning, dizziness, and hot breath; dispersing methods should be used. If the patient can eat but drinks excessively, mild purgation should be used; otherwise, purgation is contraindicated.

Note: Wind-cold injury also involves the Six Channels (Liu Jing), not limited to this; see the "Wind-cold Injury" section for details.

Zhang Yuansu (Jiegu) stated: For children externally injured by wind, use warm-hot herbs in autumn and winter, and cool-cold herbs in spring and summer. If there is high fever, polydipsia, good appetite, and constipation, administer Dahuang Wan (Rhubarb Pill) as a powder.

If there is no significant heat on the body surface but urination is difficult, this indicates damp-heat binding in the Bladder. Use damp-dispelling herbs such as Baizhu (Atractylodis Macrocephalae Rhizoma) and Fuling (Poria) to promote urination, and the heat will recede naturally. If stool and urine are normal and harmonious, do not recklessly use purgatives, lest external heat sink inward and transform into Jie Xiong (Chest Binding), a critical condition, which happens frequently.

Furthermore, treatment of Shang Han (Cold Damage) should follow the rising and falling of Yin and Yang across the four seasons, applying therapy according to rigid and soft principles. When Qi rises, disperse it following its course; when Qi gathers, purge it. With sweating, fever, aversion to wind, and floating-slow pulse, wind has injured the Wei (Defensive) level; use Guizhi Tang (Cinnamon Twig Decoction). Without sweating, with fever, aversion to cold, increased chilliness without exposure to wind, and floating-tight pulse, cold has injured the Ying (Nutritive) level; use Mahuang Tang (Ephedra Decoction). With sweating, fever, aversion to wind, and floating-tight pulse, or without sweating, with aversion to cold, and floating-slow pulse, this is called simultaneous injury to Ying and Wei; use Qinglong Tang (Azure Dragon Decoction) or Guizhi Mahuang Ban Tang (Cinnamon Twig and Ephedra Half-Pill). Without sweating, with fever, no aversion to wind or cold, and deep-rapid pulse, purgation may be used. More carefully identify the presence or absence of Jue (Reversal/Cold Extremities) and treat based on the depth of cold and heat. With sweating, cold extremities, and deep-micro pulse, this is named Yin Jue (Yin Reversal); use Sini Tang (Frigid Extremities Decoction). Without sweating, with cold extremities and deep-sliding pulse, this is named Yang Jue (Yang Reversal); use Dachengqi Tang (Major Order the Qi Decoction) plus Nifen (Calomel/Basic Mercury Chloride). If extremities are not cold, body is hot, and both interior and exterior are Yang patterns, avoid cooling herbs; after taking three to five doses, [the heat] will descend.