《太平广记·卷八十·方士五》
孙光宪跟黄承真互相认识，当初他曾偷看到那件秘术的大概，里面写道：黄帝的阴符，与现在的阴符不同，共有五六千字。
孙光宪与承真相识，窃得窥其秘纬，题云黄帝阴符，与今阴符不同，凡五六千言。
Sun Guangxian and Huang Chengzhen knew each other. He had secretly seen the outline of that secret technique, which wrote: The Yin Fu of the Yellow Emperor is different from the current Yin Fu, and it contains 5,000 or 6,000 words.