The title is to ask "how to transition between the two videos of Tik Tok?" The transition steps are as follows.

1. Open Tik Tok and click the+sign at the bottom. You can click the red circle to shoot the video material directly, or you can click "Album" to import the previously shot or downloaded video material.

2. Click "Transition" in the toolbar on the right to add a transition effect to the displayed special effects, or you can add a transition effect of a specified clip in the sliding position of the video preview interface. You can add one or more transition effects in Tik Tok.