What do you mean "offline"

Offline activities often involve face-to-face communication and interaction, such as social activities, store sales, live performances, face-to-face training and field trips. In addition, "offline" can also mean that there is no online transaction, such as traditional retail, on-site payment, telephone reservation, etc. With the development of the Internet, the concept of "offline" has also expanded to the mode of online ordering and offline consumption, that is, consumers choose goods or services online and then go to offline stores for consumption.