The main purpose of the article Cicada could be summarized as: Through the description of insects like cicadas, it explored the nature of time and life. By describing the life cycle and unique behavior of cicadas, the article shows the passage of time and the short life. It also shows the understanding and reverence of human beings for nature through human research and exploration of cicadas. At the same time, the article also discussed the meaning and value of life through the life cycle of cicadas, emphasizing the fragility and preciousness of life, which triggered the readers 'thoughts and feelings about life.