The unexpected method was often called a reversal or an unexpected ending (unexpected plot twist). The purpose of this technique was to make an unexpected change in the plot at the end of the story, breaking the reader's conventional thinking and arousing the reader's interest and surprise. The ending of the novel that was unexpected and expected was called normal ending or unexpected ending. It was an unexpected ending that surprised the readers when the plot and ending of the story were in line with the readers 'expectations.