Author Hou Shanyuan 神仙妙诀古今传。谁会此幽玄。龟蛇自然呼吸，玄牝＊绵绵。铅中汞，汞中铅。两俱全。抽添加减，进火功夫，炼就胎仙。 Rate this poem Select ratingGive it 1/5Give it 2/5Give it 3/5Give it 4/5Give it 5/5 No votes yet Rate Reviews Post review No reviews yet. Log in or register to post comments