Ancient Information Transmission Mode —— Kite Communication

The kite we use for entertainment today played an important role as an emergency communication tool in ancient times. According to legend, as early as the end of the Spring and Autumn Period, Lu's skillful craftsman lost the game (that is, Lu Ban) and imitated the bird shape. "Cutting bamboo and wood thought it was a magpie and flew three days later." This flying "wooden magpie" made of bamboo and wood is the predecessor of kite. During the Eastern Han Dynasty, Cai Lun invented papermaking. People used bamboo sticks to make a frame, and then pasted it with paper, which became a "paper kite". In the Five Dynasties, when people made paper kites, they would tie a bamboo whistle to the kite. The wind blows the bamboo whistle, which sounds like a kite, hence the word "kite". The original kites were made for military needs, and their main purpose was to be used for military reconnaissance or to transmit information and military intelligence. It was not until the Tang Dynasty that kites gradually became an entertainment toy and spread among the people. The military use of kites is recorded in history books. At the beginning of Han Dynasty, when Chu and Han contended, Liu Bang besieged Xiang Yu in Gaixia. Han Xin suggested to Hanwang Liu Bang to make a big kite with silk, silk and bamboo, and put a bamboo whistle on it, and put it over Chuying at night to make a whining sound. At the same time, the Han army sang Chu songs on the ground, which triggered the homesickness of the Chu army, thus disintegrating the morale of the Chu army and winning the war.

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