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Chao Yuanfang stated: In children, the condition of Chong She (Double Tongue) arises from heat in both the Heart and Spleen. The Heart manifests in the tongue and governs blood, while the collaterals of the Spleen emerge from beneath the tongue. If there is heat in the Heart and Spleen, Qi and Blood become excessive and attach to the root of the tongue, growing anew into a fleshy protrusion resembling a tongue but shorter and smaller. Those located on the inner cheek or upper palate are called Chong E (Double Palate); those on the gingiva are called Chong Yin (Double Gingiva). All these conditions should be treated by pricking to release blood, followed by applying Zhen Puhuang (True Polygonatum Rhizome Powder), or using Fahui (Hair Ash), Mayaxiao (Saltpeter), Pengsha (Borax), or Yanxiao (Niter) for topical application. Alternatively, soaking Huangbai (Phellodendron Bark) in Zhuli (Bamboo Juice) and applying it is also effective.

Regarding Mu She (Wooden Tongue), the tongue is the manifestation of the Heart, and the collaterals of the Spleen connect to the tongue. When viscera and bowels are obstructed and heat accumulates in the Heart and Spleen, hot Qi rushes upward, causing the tongue to swell and gradually enlarge until it fills the mouth. This is Mu She. If not treated urgently, it will inevitably prove fatal. Use 2 fen of Puxiao (Mirabilite), 1 fen of Zishuang (Purple Frost), and 0.5 fen of Baiyan (White Salt), grind them together finely. Take half a qian each time, mixed with Zhuli (Bamboo Juice) and Jinghua Shui (Well Water), and apply topically. It is also acceptable to omit Puxiao and salt. Another prescription involves grinding Huang Kui Hua (Yellow Mallow Flower) finely, mixing it with Huangdan (Red Lead Oxide), and applying it seven times. For cases where the tongue swells to fill the mouth, applying Bingpian (Borneol) alone is also excellent.

As for Nong She (Playing Tongue), it is caused by slight heat in the Spleen, making the tongue collaterals slightly tight, causing the tongue to extend intermittently. Treatment should avoid cold purgatives; instead, Xiahuang San (Drain Yellow Powder) should be administered in small doses gradually. Some physicians mistake the symptom of drinking water for heat syndrome and use cold purgatives, which is incorrect. Drinking water occurs due to deficiency of the Spleen and Stomach and scanty body fluids. If accompanied by sallow complexion, emaciation, and five-palm heat, it constitutes Gan Shou (Gut-Wasting Emaciation), and drugs such as Huhuanglian Wan (Coptis Pill) are suitable. If Nong She appears after medication during an unresolved severe illness, the prognosis is ominous. For white or black coating on the tongue, Pengsha (Borax) powder should be sprinkled on the lesion. For severe heat, add Bingpian (Borneol), or press a bean-sized amount of Huangdan (Red Lead Oxide) under the tongue, which is particularly effective.

Xiahuang San (Drain Yellow Powder) is described in Question 34.
Huhuanglian Wan (Coptis Pill) is described in Question 79.

Nie stated: Individuals with insufficient congenital Kidney Qi have weak marrow. Since bones are connected and nourished by marrow, a deficiency of marrow fails to充 (fill/nourish) the teeth, resulting in delayed tooth eruption. It is appropriate to use equal parts of Xiong (Ligusticum Chuanxiong), Gan Dihuang (Prepared Rehmannia Root), Shanyao (Dioscorea Rhizome), Danggui (Angelica Sinensis), Shaoyao (Peony Root), and Gancao (Licorice Root), grind them into powder, and take with warm water. Alternatively, rubbing the powder onto the gingiva periodically can promote tooth eruption.