The comments appear at the time-stamp they were made over the lifetime of the video, so popular videos get covered over fast, as more commenters come and leave their mark. Audiences in China are embracing the feature because it's an immersive experience that creates a sense of community. People feel like they’re in a chatroom with other viewers, watching as a group. Think of it as watching a movie with your friends, but without having to share any of your couch space.
