One of the main reasons: waiting time. At 7: 30, the TV station cut out the news broadcast, but broadcast the scheduled content. Because when the last news was broadcast, there was no time to broadcast another news, so I filled this time with the picture of the host sorting out the manuscript. Secondly, because the TV station should keep a complete manuscript as information, the host will sort out the manuscript after broadcasting the news and then store it in the designated location. That's it.