《太平广记·卷四百八十七·杂传记》
李生外出时，就用澡盆把营扣在床上，周围加封；回来时仔细查看，然后再打开。
出则以浴斛覆营于床，周回封署，归必详视，然后乃开。
When Mr. Li went out, he would cover the sleeping place on the bed with a bathtub and seal it around; when he returned, he would carefully check it before opening it.