Just like the Brewster effect, as long as you smell the smell you asked about, the memory of that time will be opened. In that youth full of memories, there are always some unforgettable people and things, or regretful choices, or withdrawal at the time, or unsaid goodbyes, leaving permanent regrets in youth. When recalling it in the future, you can only sigh. I hope that people who read this book will be relieved of their regretful youth.
Purpose: Telling about our lost youth and coming future