Besides Hong Fei, what else does a messenger have?

Because of the close relationship between ancient fish and goose and letters, fish and goose became the symbol of early postal services in China, just as early postal services in some European countries were marked by horns and horns. According to "Hanshu Su Shichuan", Xiongnu Khan deceived China's envoy, saying that Su Wu was dead, and China's envoy deliberately said that the Emperor shot down a swan flying from the north when hunting, with silk on his feet, which was written by Su Wu. Khan had to let Su Wu go. Later, we used "Hongyan", "Yan Shu", "Yanzu" and "Yuyan" to refer to letters and information.