天明砂
天明砂
出波斯國，堪捍五金器物。此藥尤多假僞，但自試之，辨取眞僞。口含無苦酢酸鹹，好青白色，燒之不沸，汁流如水，粘似膠粘，即眞矣。若燒有紫烟氣，燒上有漆者，並是眞也。可擇而用之。
End of chapter
Text and scans: Shidian Guji (Peking University – ByteDance open ancient texts). Edition details are given per book. Shidian Guji
金石簿五九數訣
天明砂
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