《太平广记·卷一百七十一·精察一》
吕元注了一个非字，打开一看正是吕元写的状子，一连判断了五次。
元乃注曰非。去括，即是元牒，且决五下。
Lü Yuan marked the character with the word "is not". When he opened it up and took a look, it was exactly the letter written by Lü Yuan. He judged it five times in a row.