In the early 1990s, in Fucheng, a small town on the southeastern coast, a group of teenagers were chasing youth on the train of the times. They were enthusiastic and reckless, growing up wantonly and barbarically.In the search for the stars, they completed the “ ordinary and extraordinary ” transformation. In the sweetest and brightest years of youth, they worked hard to welcome their glorious years and gained growth and love.By creating “Undefined Youth”, we use a story that happened in the 1990s to open up a communication channel with the current “Z Generation”.