The act of sending book cover photos to classmates does not exist in the scope of commercial use, but is an act of mutual sharing and does not involve infringement, so sending book cover photos to classmates is not infringement.

Tort refers to an illegal act that infringes on the personal property or intellectual property rights of others and should bear civil liability according to law. After the infringement, there is a specific relationship of civil rights and obligations between the infringer and the victim, that is, the victim has the right to claim compensation from the infringer.