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The *Classic of Medicine* (Huangdi Neijing) states: "Newly formed accumulations with migratory pain are easy to cure; accumulations without pain are difficult to cure." Accumulations caused by diet and food must be treated with methods that resolve digestion and guide qi. "Resolving" (Xiao) means dispersing the accumulation; "Guiding" (Dao) means promoting the movement of qi. When Spleen deficiency fails to transport, qi does not circulate freely; when qi stagnates, it forms an accumulation, manifesting as diarrhea or dysentery, or forming a palpable mass (Pi), thereby reducing dietary intake. As the Five Zang organs lack sufficient nourishment, Qi and Blood gradually become deficient and weak, leading to many critical and precarious conditions. Therefore, one must employ both resolving and guiding methods. For mild cases, standard harmonizing formulas are used; for severe cases, potent purgative decoctions or pills are necessary. This is because if turbid Yin does not descend, clear Yang cannot ascend; if pathogenic filth is not eliminated, true Yuan Qi cannot recover. It is like pacifying chaos before achieving peace. If the accumulation is due to Spleen deficiency, rendering the body unable to effectively utilize medicinal power, one may use simultaneous tonification and resolution, or tonify more than resolve, or tonify first then resolve. This aligns with Li Dongyuan's (Jiegu) principle: "Nourish the righteous Qi, and the accumulation will eliminate itself." Thus, predecessors always relied on Ginseng and Atractylodes macrocephala Rhizome to assist in the success of drugs that break stagnation and reduce hardness. The Classic states: "Do not exacerbate the pathogen, do not lose the righteous Qi, lest you cut short people's lives." This refers to this very principle.

Food consists of tangible matter. When injured, one should first reduce grain intake; next best is to resolve it; if resolution fails, then purge it. This is the method for treating initial damage from milk and food. If treatment is delayed, allowing old depression to gather, it becomes an accumulation. Its symptoms include a yellowish-white or greenish-yellow complexion, abdominal distension or tightness, poor appetite with abdominal pain, and attacks lasting several days. However, physicians treating accumulations often fail to inquire whether the ingested substance was cold or hot, nor do they observe whether the child's constitution and Qi are deficient or excess, or whether purging is indicated. Instead, they recklessly use strongly cold or hot purgatives, violating the taboo of making the deficient even more deficient. How can the harm be fully described? Injuries from hot milk or food result in Heat Accumulation; injuries from cold milk or food result in Cold Accumulation. Grains cause Food Accumulation; poultry and meat cause Meat Accumulation; vegetables and fruits cause Cold Accumulation. Therefore, medications must distinguish between cold and heat. Cold Accumulation should be treated with Xiaoji Wan (Accumulation-Resolving Pill); Heat Accumulation with Muxiang Binglang Wan (Aucklandia and Areca Seed Pill). These should still be taken with a decoction made from the originally injurious substance, known as Suyuan Tang (Source-Tracing Decoction). Whenever using purgative drugs to remove accumulation, one must first tonify Stomach Qi, such as with Liu Jun Zi Tang (Six Gentlemen Decoction), administering several doses beforehand to support the Primordial Spirit, before proceeding with purging, to avoid damaging Stomach Qi.

If a child has a naturally timid/weak constitution, even if there is an accumulation, purging is inappropriate. One should use tonification as a means of resolution. Use Liu Jun Zi Tang (Six Gentlemen Decoction) added with Curcuma zedoaria Rhizome (Ezhu) and Aucklandiae Radix (Muxiang), ground into fine powder, and made into paste pills using Ginger Juice and Medicated Leaven (Shenqu). Take 1–2 qian each time with Rice Decoction. Long-term administration will naturally resolve the accumulation. Nowadays, many children have inherently weak constitutions; for those with accumulations, this principle must be recognized. Purging drugs for accumulation should never be used lightly.