The works protected by the Copyright Law must have a certain form of material expression and be able to be used and copied by a third party  This kind of material manifestation has various forms, such as various written works, music works and scientific and technological works  This is because one of the reasons why works are protected by law is to make them spread and use
Better works exist in the author's mind, and there is no way to let a third person know and use it
Periodicals, music scores, and design drawings can all become objects of copyright protection.