Click on the input box and send a pop-up screen to type the words to the public screen.

The pop-up video system originated from the Japanese pop-up video sharing website (niconico anime), and was first introduced in China by AcFun and later by bilibili.

The effect of a large number of trolls drifting across the screen looks like that of the pop-ups in a flying shooter, and so the NICO users made the effect of a large number of trolls appearing as a pop-up video system. so NICO netizens made the effect of a large number of trolling comments a pop-up screen.

In China, a large number of comments at the same time was the only way to call it a pop-up, but with the misuse of a single comment, it's now possible to call it a pop-up.

Pop-ups give the viewer the illusion of "real-time interaction", and although the time at which they are sent varies from pop-up to pop-up, they only appear at a specific point in the video.

So, if you send them at the same time, they basically have the same theme, and you have the illusion of commenting at the same time as the rest of the audience.

The traditional player commenting system is independent of the player, so the content of the comments is mostly centered on the entire video, which is not very topical, and does not have the feeling of "real-time interaction".

The Administrative Provisions on Internet Commentary Services stipulate in Article 5, paragraph 4, that "the provision of "pop-up" commenting services should be provided on the same platform and page at the same time to provide a static version of the corresponding information content."