Related explanation: The process of copying calligraphy and painting works according to the original works is called copying. Pro is written or drawn according to the original work; Imitation is to write or draw on the original with thin paper (silk). Copying in a broad sense is not necessarily calligraphy and painting, but also tablet, sticker and so on. In order to learn skills, copying focuses on the process of copying. Replicas obtained for preservation, restoration, exhibition and sale, focusing on the results of reproduction.
Novices often use the method of "copying" when painting, rather than sketching directly.