| | Feng Gang was a native of Youyang. He often collected the flowers of a hundred herbs, soaked them in water and sealed them with mud. Starting from the first month and ending at the end of the ninth month, he buried them for one hundred days before decocting and making pills. Those who died suddenly were given this medicine in their mouths, and they all revived immediately. Feng Gang took this medicine regularly, and thus lived several hundred years without growing old. Later he entered Difei Mountain and ascended to immortality there.
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