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Diseases may recur due to violating contraindications. The so-called contraindications refer not only to avoiding the location of *Ren Shen* (Human Spirit, specific areas where Qi and Blood gather according to time cycles) but also include conditions such as extreme hunger, extreme thirst, extreme cold, extreme heat, overeating, drunkenness, severe deficiency, exhaustion, excessive labor, and extreme fatigue; all these are contraindications for acupuncture practitioners. If deficiency and excess are not distinguished, if needle insertion depth is inappropriate, if the *Ren Shen* locations are violated, or if the laws of the Four Seasons are disregarded, even if the disease appears cured, it will inevitably recur. This must be strictly cautioned against.

As days pass, the disease may decline but remain difficult to cure. The treatise states: "If moxibustion is applied on a day corresponding to the Five Elements' punitive relationship with the disease's organ, the disease will be suppressed and difficult to heal." Specifically, heart disease encountering Geng days, liver disease encountering Xin days, spleen disease encountering Yi days, lung disease encountering Ding days, kidney disease encountering Ji days, small intestine disease encountering Ren days, large intestine disease encountering Bing days, stomach disease encountering Jia days, gallbladder disease encountering Geng days, and bladder disease encountering Wu days. In all these cases, the healthy Qi is constrained on its corresponding days, leading to Qi decline, making needling ineffective for curing the disease.

*Sun Luo* (Fine Collaterals) are located in the muscle spaces, with blood flow emerging from branch vessels. *Sun Luo* refers to fine collaterals, which are the branches of the main collaterals. They run between the muscles. If blood stagnates there, it can be pricked to release it, regardless of the meridian intersection points.

Chest tightness, fainting, or dizziness after needling indicates deficiency of the meridians, requiring tonification of the collaterals; the treatise states: "If students thoroughly understand the circulation of Qi and Blood, select acupoints accurately without error, and apply tonifying and reducing methods appropriately, they will never encounter adverse reactions like needle-induced syncope or fainting." However, in hurried situations, for patients who fear needling, excessive needles may cause injury. Those with robust constitution will recover spontaneously as Qi circulates, while those with weak constitution require immediate rescue treatment.