Traditional Culture Encyclopedia - Traditional customs - What are the ways of communication in ancient and modern times? What is the usage?

What are the ways of communication in ancient and modern times? What is the usage?

I. Ancient means of communication

First, bonfires spread military intelligence.

Second, Hongyan passed the book

Third, fish carry a ruler.

Fourth, the Jade Bird delivers books.

Five, "Huang Er Biography"

Sixth, kite exchange

Seven, bamboo tube delivery book

Two. Modern means of communication

microwave communication

satellite communication

fibre-optic communication

These three are modern new ways of communication.

At the same time, continue to use various traditional communication methods.