What are these two media?

It is one of the traditional original media to receive each other's information by direct, simple and intuitive interactive ways such as gestures, semaphores and bonfires. Its characteristics are intuitive and fast, but it is greatly limited by natural conditions, such as weather, light and natural obstacles.

The second kind of media

Including letters, paintings, words, symbols, printed matter and photographic works. In this way of information exchange, the receiver of information relies on visual senses to receive information, and the sender of information begins to use certain communication facilities and tools.

The third kind of media

Both the sender and the receiver of information must use communication facilities. This kind of media includes telephone, records, movies, radio, television, mobile phone communication and so on.

The fourth kind of media

Internet media is classified as the fourth kind of media alone because its media mode and information carrier are different from the third kind of media. In the traditional sense, the use of media has certain time and space restrictions, but as long as people who have contacted star media know, the flexibility and mobility of online media are beyond the reach of other media. It is not limited by region and time, and can be used anywhere for the first time, and the convenience is obvious to all. It is also the main development platform of the future media.