The activity of gathering novels to give away mobile phones was not real. In novels, the term "cluster" generally referred to a series of events or characters that happened during a certain period of time. The gift of a cell phone was a common benefit or reward in novels, but it was usually just a fictional plot with no actual meaning. Of course, a novel is a fictional art form. We can see some plots and characters that don't exist in the real world. However, these plots and characters usually only exist to express the author's thoughts and worldview, rather than real events in real life.