I am a post-90s generation. In recent years, I have watched a series of works commemorating the youth of the post-80s generation. In the eyes of our elders, our generation has seen that the unruly post-90s generation has gradually aged, and one by one has become a mother and father. So all our youth memories have become an everlasting memory, hitting the rock in our hearts again and again in the depths of our minds. When I started writing in my mediocre life, I used casual essays to describe a memory about a post-90s generation.