What does it mean to have a left arrow next to Tik Tok's recommendation letter?

Forward or share function. Tik Tok is a short video social application, and the left and right arrows refer to the forwarding or sharing function, which is used to share the currently playing video with other users or through other platforms. After clicking the arrow button on the right, a sharing panel will pop up with various sharing options, such as sharing with friends through private messages, sharing with other social media platforms, and sharing with friends.