Marshmallow back to live is a kind of network buzzword, usually used to describe the scene when netizens repeatedly ask the live host to replay a certain picture or content. I believe that many people have encountered such a thing when watching the live broadcast: the live host missed a comment, pop-up information or important images, so there are viewers constantly in the pop-up screen shouting "marshmallow back to the live broadcast!" , hoping that the live host will be able to revisit that content. This phenomenon has become a cultural symbol in the live broadcasting world, showing the enthusiasm and support of the audience for the live host.
The origin of the catchphrase marshmallow back on air is not well known, but some say it was influenced by a Japanese variety show. On that program, the host would often play a small animation after a funny scene or image, in which a cartoon character would run from one side of the screen and then immediately disappear. This little animation was called "Cotton Candy", perhaps because the character looked like a long marshmallow. So some people use the word "cotton candy" as an Internet catchphrase to express the audience's eagerness for a certain piece of content during a live broadcast.
In a nutshell, "marshmallow back to the live broadcast" means to express the audience's demand and curiosity for a certain content to the live host, and it is also a kind of good expectation of the audience for the interactive live broadcast. In a live broadcast, the interconnection between the audience and the host is very important, and the "marshmallow back to live" shout is a very good way of interaction, so that the host can feel what their audience likes to see the most, but also increase the fun of the live broadcast, so that the live broadcast is more lively and interesting.