Eryuan (Japanese: にじげん) is a special term in ACGN subculture, which comes from Japanese.

"Second dimension" means "two dimensions".

Early Japanese animation, comics, games and other works are all composed of two-dimensional images, simply for paper.

Graphic visual works, such as animations and games presented on a plane or screen, in which the characters all appear in the form of images,

It is not the same as the film and television drama played by real people, so it is called "paper man". Virtual worlds created through these carriers

This world is called "the second world" by anime lovers, or "the second world" for short. In a sense,

Second dimension also means that people who love it are living in a flat world.

Secondary sources:

"Secondary element" originally refers to "two-dimensional world", which originated from the Japanese economic recession around 1989. People were in love at that time.

Generally pessimistic, I began to miss the good old days, hoping to jump out of the confusion of the real world and linger in cartoons.

A fictional world created by animation, games and light novels. Broadly speaking, cartoons, animations,

Video games and their related core products and derivatives can be classified into two-dimensional category, which is different from three-dimensional space.

The real world and the characters in it all appear in the form of images, which are different from those played by real people in film and television dramas. It covers a wide range of topics.

Pan, history, sports, adventure and so on are all common. With more and more audiences, young people are no longer satisfied with comics and games.

Passive acceptance, began to use this style, this element expression, with the second element lovers group day.

The economic and cultural activities related to the secondary element are becoming more and more frequent, and the secondary element culture is gradually changing from

A secret carnival corner of a minority spread and penetrated into all aspects of social life.