zhēn kǒng
Also rendered: The needle hole (this site; 空 read kǒng as 王冰 glosses it, an opening that can be opened or closed) · The needle aperture; the puncture (both name the opening; only the first carries the reading that keeps it apart from 空虚, emptiness)
Reviewed · 2026-10-02
At a glance
The puncture the needle leaves, and the one thing chapter 53 says must be handled after the needle is withdrawn: 入實者,左手開鍼空也;入虚者,左手閉鍼空也 — for repletion the left hand opens it, for vacuity it closes it. Read with the two lines before it, the reason is plain: repletion is qi having come in, vacuity is qi going out, so the opening is left open to let qi escape and pressed shut to keep it from escaping. 空 is read kǒng here, as 王冰’s gloss has it, not kōng.
Passages where the term does real work, with the original, pinyin and English on the same line.
Every rendering below is a decision about which reader is being addressed. There is no neutral option.
| This site | the needle hole | 空 read kǒng after 王冰's 空,孔也, because the two lines are about opening and closing an aperture |
| Later medicine | 鍼孔 zhēn kǒng | written with 孔 in later editions; the commentaries keep the reading and the rule — open to drain, close to supplement |
| Modern editions | 针孔 needle hole; 出针后按压针孔 pressing the point after withdrawal | they describe the procedure and drop the rule that gives it |
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