xuán fǔ
Also rendered: Dark openings (this site; literal from the two graphs, and the chapter's own gloss is 汗空) · Sweat pores (王冰's gloss, 汗空也, and what most modern reading gives)
Reviewed · 2026-10-03
At a glance
The dark openings — 玄 xuán, what is dim and cannot be made out; 府 fǔ, a chamber where things are stored — and the chapter gives its own gloss for them: 所謂𤣥府者,汗空也, the dark openings are the sweat pores, 空 read kǒng after 王冰: 空,孔也. That reading is worth holding against 骨空 in chapter 60, one chapter back, where the same graph is read kōng as written; the two are not the same hole. What makes the word worth an entry is the other place it is used, where the chapter is arguing rather than defining: 腎汗出,逢於風,内不得入於藏府,外不得越於皮膚,客於𤣥府,行於皮裏,傳爲胕腫,本之於腎,名曰風水. The sweat of the kidney has come out and met wind; it can get neither back into the depots nor out past the skin, and so it lodges in the dark openings — the 玄府 is the place a thing is stuck when it can move in neither direction — and what is stuck there turns into the swelling the chapter is about. 後世 took the word further: 劉完素 made the 玄府 the gates by which qi and fluid go out and in, and found them everywhere, in the viscera, the skin and hair, the sinews and membranes, the bone and marrow, the nails and the teeth. The chapter itself needs none of that; it needs only a pore that will not let sweat past. The base text writes the graph 𤣥, an old form of 玄, and this is kept as written. The word occurs twice in this chapter and has not appeared in any chapter transcribed on the site before.
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 | dark openings | literal from the graphs — 玄 what lies far off and cannot be made out, 府 a chamber where things are kept — and kept in the plural because the chapter's use is distributive: sweat that cannot get past them is what makes the swelling |
| Physiological | the sweat pores · 汗空 | 王冰's 空,孔也, and the reading of 空 as kǒng that goes with it; exact, and the sense the chapter itself gives, though it stays with the skin where the chapter's argument needs a place rather than an organ |
| Later theory | xuanfu · the gates of qi and fluid | 劉完素《素問玄機原病式》 made the word general: 玄府者,無物不有 — the viscera, the skin and hair, the sinews, the membranes, the bone and marrow, the nails and the teeth all have them, and they are the doors by which qi rises, falls, goes out and comes in. Useful for reading everything after the Song; more than this chapter asks for |
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