One,

Second,

Secondary introduction:

Two dimensions (English name: two dimensions) is a special term of ACGN sub-cultural circle, which comes from the Japanese word "two dimensions", meaning "two dimensions".

Early Japanese animation, comics, games and other works are all composed of two-dimensional images, and their pictures are flat in our view, so the virtual world created by these carriers is called "secondary world" by animation lovers, referred to as "secondary world" for short. Japanese animators refer to characters in animation, games and other works.

The word ACGN is widely used as the title of "overhead world" or dream world in ACGN cultural circle, but ACGN is not equivalent to the second dimension.

The second dimension is a beautiful world imagined by human beings. "Secondary element" is a culture, not a style.