灯谜是中国的特产,自古以来就有人利用灯谜令人费解、保密性强等特点,用于秘密通信。早在唐代,武则天当上女皇时,朝中就有人用灯谜进行秘密通信。当时,裴炎、徐敬业等不少官员反对武则天,图谋复辟,他们在暗中联络时就用到了灯谜。有一天,中书舍人裴炎在给徐敬业的密信 Lantern riddles are the specialty of China. Since ancient times, some people have used puzzles such as puzzling secrets and confidentiality for secret communications. As early as the Tang Dynasty, when Empress Wu Empress was Empress Dowager, someone used the riddles for secret communications. At that time, many officials such as Peiyan, Xu Jingye and others opposed Wu Zetian and tried to restore them. They used the riddles when they secretly contacted them. One day, in the book Pei Yan Xu Jingye secret to the letter