He-sea (water) point.

bubble_chart Etymology

"Chi" (尺) is the compound character of "人" (man) and "乙" (the shape of a bent elbow), referring to forearm. "Ze" (澤) refers to a low-lying area of water, named for its characteristic position. Huangdi Neijing MingtangYang Shang-shan's commentary: "'Ze' (澤) refers to the place where the water accumulates, like in a pond or a marsh. 'Chi' (尺) refers to the area extending from here towards the mouth, approximately one 'chi' in length. The central meridian of the forearm flows through this area, stays active and descends, similar to the concept of water, hence the name '尺澤' (Chize)."

bubble_chart Location

Chize (LU5) acupoint
(adapted from "Meridians and Acupoints")

In the cubital crease, in the depression on the radial side of the biceps tendon.

• Lingshu-Benshu: "The artery in the middle of the elbow";
• Zhenjiu Jiayi Jing: "In the middle of the elbow, approximately above the crease along the artery. "
• Suwen-Cijin Lun Wang Bing's note: "In the middle of the bend";
• Waitai Miyao: "In the middle of the two tendons and bones in the horizontal crease of the bent arm, where there is a depression";
• Yixue Rumen: "Outside the large tendon in the elbow crease";
• Xunjing Kaoxue Bian: "Only when the arm is bent like a bow can the needle be inserted."

bubble_chart Anatomy

• Muscles: The medial part is the biceps brachii, and the straight inferior part is the origin of the brachioradialis muscle.
• Nerve: There is the lateral cutaneous nerve of the forearm in the superficial layer, and the trunk of the radial nerve directly below.
• Vessels: cephalic vein, radial recurrent artery, and venous branches.

bubble_chart Manipulation

Perpendicular insertion 0.5~1 cun. Use direct moxibustion with caution, moxibustion with moxa stick for 10 to 15 minutes.

clear and disperse lung qi, purge fire and downbear counterflow.

• Classical: cough, asthma, reversed flow of qi, hemoptysis, tendency to vomit, fullness and pain in the chest and ribs, pulmonary tuberculosis, chest pain, irritability, urinary retention, stomach pain, abdominal distension, colicky abdominal pain, constipation, nosebleed, throat obstruction, dry tongue, chills and shaking, malaria, night sweats and thirst, epilepsy, weakness and fatigue, lumbar pain, shoulder and back pain, wind-Bi syndrome, inability to raise the arm, and elbow and arm cramp-like pain.
• Modern: common cold, sore throat, tonsillitis, laryngitis, pharyngitis, bronchitis, whooping cough, pneumonia, pleuritis, intercostal neuralgia, erysipelas, abnormal fetal position, measles, high blood pressure.

bubble_chart Combinations

• vomiting: Chize (LU5), Daling (PC7).
• Epilepsy: Chize (LU5), Rangu (KI2).
• Wind-Bi syndrome causing inability to raise the arm: Jianzhen (SI9), Chize (LU5).
• whooping cough: Chize (LU5), Hegu (LI4).
• epistaxis: Chize (LU5), Taichong (LR3).