太古土兌經
鍊鐵法

鍊鐵法

鍊鐵法

右銷投牛尿中，五十遍即成精也。

End of chapter
鍊鐵精法伏錫法

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

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