我国的书信史源远流长,战国时期乐毅的《报燕惠王书》、鲁仲连的《遗燕将书》、李斯的《谏逐客书》等,都已是传诵千古的名篇。但先秦两汉人写信,形式比较随便。至迟到魏晋时期,开始有人撰作“书仪”,就是各类书信的格式,以供他人写信时套用。这类文字在魏晋到隋唐之际非常流行。此外还有专供夫人、僧侣使用的《妇 The history of Chinese letters is long-established. In the Warring States period, Yi Yi’s “Yan Hui Wang Shu”, Lu Zhonglian’s “Remaining Yan Jiang Shu”, and Li Si’s “Ran Fang Ke Ke” are all famous stories. However, people in the Pre-Qin and Han dynasties wrote letters in a more casual manner. At the time of the Wei and Jin Dynasties, people began to write “Books and Instruments”, which was the format of various types of letters to be used when others wrote letters. This type of writing is very popular during the Wei and Jin dynasties and the Sui and Tang dynasties. In addition, there are "women who are specially used by their wives and monks.