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This is due to a deficiency of Yin Qi (Yin Energy) and an excess of Yang Qi (Yang Energy), resulting in fever and vexation. In Shaoyin disease (disease of the Lesser Yin channel/organ system), if the patient experiences aversion to cold, curling up, occasional spontaneous vexation, and a desire to remove clothing or bedding, this condition is treatable. If the disease pulse has resolved but vexation reappears, it is because the illness has newly convalesced yet the patient was forced to eat; the Spleen and Stomach Qi are still weak and unable to digest food, causing slight vexation; reducing food intake will lead to recovery. In Shaoyin disease, if the pulse is faint, fine, and deep, the patient only desires to sleep, sweats without vexation, and feels like vomiting; by the fifth or sixth day, after spontaneous diarrhea, if vexation and inability to lie down occur, it indicates a fatal prognosis. After sweating followed by purging, if the pulse is calm but slight vexation remains, this is due to recent deficiency being unable to withstand the grain Qi.

After Han Syndrome (Cold Damage) has been treated with sweating, emesis, or purging, the Zang-Fu organs are all deficient, while heat pathogens remain unresolved, leading to deficiency vexation.

The toxic pathogenic factors of Han Syndrome attack the Stomach, causing vexation and oppression. Or, after taking medicine, if the exterior syndrome is not resolved and there is fluid retention below the heart, the patient may have slight vomiting, chest fullness with heat, and vexation.

Thirst in Han Syndrome occurs when heat pathogens enter the Zang organs and flow into the Shaoyin meridian. Shaoyin governs the Kidney, which dislikes dryness; thus, thirst and a desire to drink occur. In Jueyin disease (disease of the Greater Yin channel/organ system), if the patient is thirsty and desires water, giving them water will cure the condition.

In Han Syndrome Yangming disease (disease of the Yang Brightness channel/organ system), heat enters the Stomach and combines with grain Qi, causing vomiting. Or, if emesis or purging has already occurred, deficiency-heat resides in the Zang organs, inevitably leading to a desire for water; once water enters, the Stomach becomes deficient and cold, also causing vomiting. In Han Syndrome, if there is fever, no sweat, vomiting, inability to eat, yet profuse sweating occurs, this indicates the pathogen is transferring to Yangming. In Han Syndrome, if vomiting is frequent, even if Yangming symptoms are present, purgative methods should not be used. In Shaoyin disease, with diarrhea, faint and choppy pulse, vomiting, and sweating, frequent bowel movements with small volume indicate that the upper body should be warmed using moxibustion.

This refers to heat pathogens residing in the Spleen and Stomach. Or, after resolving the exterior through sweating, if the Stomach is disharmonious and residual heat remains, rising heat steams upward, causing epigastric痞结 (fullness and obstruction), leading to dry heaving.

In Han Syndrome Shaoyin disease, if food entering the mouth is immediately vomited, or if there is a sensation of nausea in the heart region with an inability to vomit, immediate emesis should be induced. However, if at the onset, the hands and feet are cold and the pulse is string-taut and slow, indicating internal cold-fluid retention, emesis is contraindicated; instead, warming treatment should be applied. If the patient’s pulse is rapid, indicating heat, they should normally digest food and have an appetite; if they instead vomit, it is because the physician previously induced sweating, causing Yang Qi to become weak and Diaphragm Qi to be deficient. The rapid pulse here represents "guest Yang" (false heat), which cannot digest food, resulting from a deficient and cold Stomach.