KI9 (Zhubin, “Guest House”) is the Xi-Cleft point of the Yin Linking Vessel (Yin Wei Mai) point of the Kidney Channel Meridian. It is located on the medial aspect of the lower leg, 5 cun superior to the apex of the medial malleolus, on a line drawn from KI3 (Taixi) to KI10 (Yingu), at the lower end of the belly of the gastrocnemius muscle. It calms the spirit (Shen), resolves phlegm, regulates the Yin Linking Vessel (Yin Wei Mai).
On the medial aspect of the lower leg, 5 cun superior to the apex of the medial malleolus, on a line drawn from KI3 (Taixi) to KI10 (Yingu), at the lower end of the belly of the gastrocnemius muscle.
Perpendicular insertion, 1.0 to 1.5 cun deep.
Calms the spirit (Shen), resolves phlegm, regulates the Yin Linking Vessel (Yin Wei Mai).
Mental derangement, mania, tongue thrusting, vomiting of foamy saliva, pain in the foot and lower leg.
As the Xi-Cleft point of the Yin Linking Vessel, Zhubin is a primary point for acute conditions involving this vessel, particularly psycho-emotional disorders. It is classically indicated for severe mental disturbances like mania and is used to calm the spirit, resolve phlegm that may be clouding the mind, and regulate Qi in the chest and heart region. Its location also makes it useful for local pain and cramping in the calf.
Classical text; the translation was prepared with AI and is not clinical advice.
《醫學綱目·刺灸》 Yīxué Gāngmù · Cìjiǔ — Outline of Medicine: Needling and Moxibustion, Lou Ying, 1565 · 卷之八·陰陽臟腑部 · 穴法下 · Source: jicheng.tw ↗
築賓二穴，在內踝上腨分中，陰維之郄。 針入三分，灸五壯According to this text, KI9 lies above the inner ankle in the parting of the calf muscle and is the xi (cleft) point of the yinwei vessel; needle 0.3 cun, 5 moxa cones.
《備急千金要方》 Bèijí Qiānjīn Yàofāng — Essential Prescriptions Worth a Thousand Gold for Emergencies, c. 650 · 第二 · Source: Wikisource ↗
妊娠九月，足少陰脈養，不可針灸其經（如湧泉、然谷、太溪、交信、築賓、複溜等穴The text states that in the ninth month of pregnancy, when the foot shaoyin channel nourishes the fetus, its points, including KI9, must not be needled or moxibusted.
《醫學入門》 Yīxué Rùmén — Introduction to Medicine, Li Chan, 1575 · 经穴起止 · Source: Wikisource ↗
屈膝取之，针三分，灸五壮。 主小儿疝痛不得乳，癫狂呕沫The text records that KI9 is located with the knee bent, needled 0.3 cun with 5 moxa cones, and was used for shan pain in infants who cannot nurse, and for madness with frothy vomiting.
《針方六集》 Zhēnfāng Liùjí — Six Collections on Needling, Wu Kun, 1618 · 卷之五·紛署集 · 足少陰及股並陰蹻陰維凡二十穴第三十一 · Source: jicheng.tw ↗
築賓二穴，主足腨痛，七疝，癲狂，妄言罵詈，嘔沫The text records that KI9 was used for calf pain, the seven kinds of shan, madness with wild talk and cursing, and frothy vomiting.
KI9 is one of 27 points on the Kidney Channel Meridian. Nearby points:
KI9 (Zhubin) is located on the medial aspect of the lower leg, 5 cun superior to the apex of the medial malleolus, on a line drawn from KI3 (Taixi) to KI10 (Yingu), at the lower end of the belly of the gastrocnemius muscle.
KI9 calms the spirit (Shen), resolves phlegm, regulates the Yin Linking Vessel (Yin Wei Mai). Common clinical indications include mental derangement, mania, tongue thrusting, vomiting of foamy saliva, pain in the foot and lower leg.
Perpendicular insertion, 1.0 to 1.5 cun deep.
KI9 is a point on the Kidney Channel Meridian (Zú Shàoyīn Shènjīng).