《太平广记·卷三十六·神仙三十六》
于是来到堂北，见北门斜掩着，偶然出去一望，见下面是青州，好像就在眼前。
因至堂北，见北户斜掩，偶出顾望。
He then came to the north of the main hall and saw that the north gate was half-open. Casually looking out, he recognized Qingzhou down below as if it were right before his eyes.