Zhejin 輒筋
Side of the chest, 1 B-cun forward of the midaxillary line, in the fourth intercostal space.
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Abdominal part of pectoralis major muscle · Serratus anterior muscle · External intercostal muscles
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On this page
1Where is Zhejin?
Side of the chest, 1 B-cun forward of the midaxillary line, in the fourth intercostal space.
It is just ahead of Yuanye (GB22).
Abdominal part of pectoralis major muscle · Serratus anterior muscle · External intercostal muscles
2How do I find it on my body?
- Find Yuanye.
- Follow the same 4th intercostal space forward 1 B-cun and press.
A cun is a body-scaled unit of length. The precise way is to divide a bone length into equal parts (proportional bone cun); finger widths are a quick estimate.
- abdominal part of pectoralis major
- The small lowest part of pectoralis major, starting from the sheath of the belly muscles. It pulls the arm down.
- external intercostal muscles
- The outer layer of thin muscles filling the gaps between the ribs. They help lift the ribs when you breathe in.
- intercostal space
- The gap between two ribs, felt with a fingertip as a slight groove between bone and bone. It is named after the rib above it (the gap below the first rib is the first intercostal space).
- midaxillary line
- A vertical line dropped down the side of the trunk from the middle of the armpit, with the arm raised.
- serratus anterior
- A muscle attached to the side ribs like saw teeth and running to the inner edge of the shoulder blade; it holds the blade against the chest wall when you push forward. In lean people its teeth show on the side of the chest.
3Before you press
- The pleura and lung lie close beneath the rib spaces — do not dig a fingertip in deeply.
- Avoid broken or swollen skin and press only to a comfortable level.
- Acupressure is not a substitute for medical care.
- For crushing chest pain or sudden breathlessness, call emergency services at once; do not try acupressure.
4How has it been used traditionally?
- A Gallbladder meridian point on the side of the chest; the Zhenjiu Jiayi Jing gives it no extra category.
- The name is usually translated as 'Sinew Seat'.
From traditional texts — not a claim of effect.
?FAQ
Where exactly is Zhejin?
Side of the chest, 1 B-cun forward of the midaxillary line, in the fourth intercostal space. It is just ahead of Yuanye (GB22).
How do I find Zhejin?
Find Yuanye. Follow the same 4th intercostal space forward 1 B-cun and press.
What should I watch out for?
The pleura and lung lie close beneath the rib spaces — do not dig a fingertip in deeply. Avoid broken or swollen skin and press only to a comfortable level. Acupressure is not a substitute for medical care. For crushing chest pain or sudden breathlessness, call emergency services at once; do not try acupressure.
Sources
- Location: WHO Standard Acupuncture Point Locations in the Western Pacific Region (2008), p. 183
- Standard comparison: Chinese national standard GB/T 12346-2021 (Nomenclature and location of meridian points)
- Korean anatomical terms and point names: KMCRIC Standard Acupoint DB (Korea)
- Traditional use cross-check: AcuAtlas dataset (CC BY 4.0)
- 3D: computed on Z-Anatomy (CC BY-SA 4.0) · BodyParts3D © DBCLS
Positions computed from the WHO standard locations (2008) on Z-Anatomy (CC BY-SA 4.0) · BodyParts3D © DBCLS. For reference only — not a substitute for diagnosis or treatment. See a clinician if you are unwell.