Meticulous brushwork is a form of Chinese painting that depicts scenery with meticulous brushwork, and it is also a meticulous brushwork of China. The red pen in literature probably refers to a neat, meticulous and comprehensive description of a scene or character, which is a description with personal color or viewpoint after careful and rich polishing. In literature, line drawing describes the state of affairs with visible superficial phenomena, and depicts a scene or character deeply, concretely and faithfully, generally without imagination and personal subjectivity.