The host of the party usually writes the lyrics himself, depending on the program. The two people only need to cooperate during the walk (which is equivalent to a rehearsal), so it is relatively easy to memorize the lines. News anchors (some studio recordings or live broadcasts) generally watch the epigraph. As for the hosting of variety shows, they have a high degree of flexibility and adaptability. It depends on the host's own ability, otherwise it will be like the vase-like hosting type that has appeared before. Because this type of host may not have decided what he is going to talk about until the second before the show starts.