Tik Tok adopts real-time communication technology. When a user sends a message, the message is immediately sent to the other party's device and displayed as read. This design can let users know that the other party has received the message, which is convenient for both parties to communicate and exchange in time. In addition, Tik Tok also provides a reading receipt function, which users can turn on or off in the settings to decide whether to display the reading status to the other party.