Lu Xun's Kite Lesson is written at the beginning and the end, which are the beginning and the end respectively. What's the purpose?

From the content, from the beginning, Beijing flew kites in this season, but in the end, it didn't want to see kites again. The purpose of writing about the environment is to set off the psychological change process of the characters and highlight the cruelty of feudal autocratic education to children's nature. The author feels indignant and sad because the victims don't know ("lament their misfortune and anger them"); Structurally, it echoes from beginning to end.

I hope this helps.