Xuanguan yiqiao 玄關一竅

This page is excerpted from F. Pregadio, Dictionary of Taoist Internal Alchemy (Brill, 2025).

Translation

One Opening of the Mysterious Barrier; One Opening of the Mysterious Pass.

Note: This is one of four equivalent terms, namely One Opening of the Mysterious Barrier, One Opening (yiqiao 一竅), Mysterious Barrier (xuanguan 玄關), and Mysterious Opening (xuanqiao 玄竅).