Youth is not necessarily ignorant. Youth must be frivolous and unruly. Youth passes through our years, brings us into the emotional zone, and begins a journey. From one you to you, from one to them, from one to me, from one to us, youth is our life Homework, with the impact of age, becomes more and more mellow, one jumps to two, and two will also evolve into three. Our group of children who shouted the slogan "Youth is invincible" have grown up and become more complicated. Facing the subsequent youth, we dig out the contradictions of the previous one. The youth we missed has become waiting... ... Waiting for such an explanation, everyone's lives are being disturbed. Gradually we are lost, and gradually we start to cheer up again.