《太平广记·卷三十四·神仙三十四》
走了几里，来到太白山的西岩下。这里有一块大磐石，右边有石壁，老头用拐杖敲了敲。
老父遂将西去，数里至大白山西岩下，一大盘石，左有石壁。
They walked for several miles and arrived at the bottom of the Western Cliff of Mount Taibai. There was a big cliff here, with a rock wall on the right side. The old man knocked on it with his walking stick.