The meaning of letters

is to express affection. Letters, as an applied document, can not only express their feelings freely, but also be preserved and have commemorative value. Letters are a carrier of information transmission and emotional expression between people. In ancient China, they were also called ruler, letter, ruler, letter, double carp, swan goose, letter, letter and note, from which jade letter, Yao letter, letter, handwritten note and colored note were derived. There is a difference between ancient "books" and "letters". "Book" refers to letters, which is the oldest title and has been used since the Spring and Autumn Period. Letters originated in the Shang Dynasty, and the 513th piece of Oracle bones unearthed in Yin Ruins is a "border newspaper" from the border of Yin to Kyoto. Archaeologists Mr. Wu Ruhao and Mr. Pan You asserted after textual research that this was "Hou Bo and the general reported the invasion of Fang State". It can be seen that from the Shang Dynasty, China began to transmit military information in the form of words.