Summer is here, and the seasonal birds and insects are chirping. The wind is hot, the cicadas are chirping, what is their name? Summer has arrived, which means that summer has arrived, and the seasonal birds and insects are chirping accordingly. Especially the cicadas have a crisp and clear voice, singing beautiful songs, attracting people, so they call it "summer". The cry of cicadas is a metaphor for the arrival of summer. This is just a metaphor and cannot be completely considered as the arrival of summer.