黃帝九鼎神丹經訣
磁石出處

磁石出處

磁石出處

臣按：磁石生泰山川谷中，及磁山山陰有鐵者，則生其陽。採無時。其好者能懸吸針，虚連三四爲佳，今最生相州也。

End of chapter
磁石主療鍊磁石入長生藥法

Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji

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