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The symptom of heaviness in the body, contemporary physicians only know to use methods for drying dampness, but do not know to tonify deficiency. The *Suwen · Shi Congrong Lun* chapter extensively discusses how liver deficiency, kidney deficiency, and spleen deficiency all cause heaviness in the body and mental vexation, thus proving that heaviness is a deficiency syndrome. It is appropriate to use Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) with modifications, and to administer Bawei Wan (Eight-Ingredient Pill) according to the patient's condition. When righteous qi is deficient, pathogenic factors easily invade; treating only the branch symptoms without addressing the root is not the correct method.

The *Jiuling Shanfang Ji* records: In the past, a man surnamed Zhong suffered from hypochondriac pain. Many physicians believed it was an abscess. They administered various aromatic drugs, dried ginger, cinnamon twig, etc., which made the condition even worse. Xiang Yanzhang examined his pulse and told him: This is a disease caused by kidney pathogenic factors. The treatment should first involve warming and promoting urination/drainage, followed by tonification. He administered Shenbao Wan (Divine Preservation Pill), after which black urine was discharged and the pain stopped. He then ordered the patient to continue taking Shenxiong Wan (Divine Xiongan Pill). Some doubted this approach was too aggressive. Xiang Yanzhang said: Previously, Shenbao Wan was used because the kidney pathogen had penetrated the membrane source; only full scorpion can guide the medicinal action. However, croton seed is hot in nature; without mangstone and rhubarb to purge the bowels, the heat would inevitably cause recurrence later. Thus, after several episodes of severe purging, the illness was cured. Xiang Yanzhang knew the cause of the man's illness because the yang pulse was wiry and the yin pulse was slightly choppy. A wiry pulse indicates pain; a choppy pulse indicates excess kidney pathogen. The kidney pathogen presses upward on the hypochondrium but cannot descend downward. Moreover, the kidney dislikes dryness; when heat just erupts, it must be relieved through purgation/urination to heal. The classics state: Pain diminishes with relief/purgation; this likely refers to this case. Due to excessive sexual activity, individuals with kidney deficiency and frailty often have faint, slight pain between the chest and hypochondrium. This is due to kidney deficiency failing to constrain and qi deficiency failing to generate blood. Qi and blood are like water: when abundant, they flow smoothly; when scarce, they stagnate. Therefore, if qi and blood are not deficient, there is no stagnation; once deficient, stagnation is rare to avoid. Hence, pain arises. It is appropriate to use herbs like Pogostemonis Herba (Bu Gu Zhi) to tonify the kidney, and Chuanxiong Rhizome and Angelicae Sinensis Radix to harmonize the blood. If treated as ordinary hypochondriac pain, it would be dangerous. One must differentiate based on left/right qi and blood to apply treatment. Pain on the left is liver fire accompanying qi stagnation. Pain on the right is spleen fire accompanied by phlegm and food retention. Treatment focused on moistening the lung and softening the liver, achieving rapid effect, which is clear evidence of liver transferring pathogen to the lung.