QM in the second dimension usually refers to the name of a certain character or work, but it can also be used as a screen name or to represent a certain society or club. In the two-dimensional culture, names have important meanings. They may be derived from music, literature, history and other elements, or they may be the names of characters or works that fans like. These names are not only used to express support and identification for the character, but are often used as online names or to represent a specific society or organization. For example, some fans may use the name of their favorite anime character as their online name. The two-dimensional dimension originally refers to the "two-dimensional world", a two-dimensional space including length and width. Later, it became a specialized term in the ACGN subculture circle, and it was specifically referred to as "two-dimensional". It consists of animations, comics, games and other works with two-dimensional images. To put it simply, they are animations, games and other two-dimensional visual works presented on a flat surface such as paper or a screen. The characters in them are all in the form of images, which are different from those played by real people. Film and television dramas, so they are called "Paper Man". The virtual world created through these carriers is called "two-dimensional world" by animation fans, or "two-dimensional" for short. In a sense, the second dimension also means that people who like it feel like they are living in a two-dimensional world.