五年级学生蒋方舟和她的同班死党们正处于青春发育的前期，他们的成长痕迹中带有这个时代的典型特征。他们敏感，好奇，而叛逆。在他们的生活中，电子游戏成为日常进行的主要动力，电视广告像台词一样脱口即出，成人因素充斥了整个少年世界，早恋、发育等敏感问题随时爆炸出不可抑制的脸红心跳。总之，这是一个朦胧，躁动，充满未知的青春前期。( Jiang Fangzhou who was the fifth grade was during the early stage of youth development with her friends in the same class and their growing process indicates the typical characteristics of the age. They were sensitive, curious and rebellious. The video game had become main motive to their lives and they blurted out the TV advertisement like lines; the whole juvenile world was full of adult elements; the sensitive problems such as puppy love and development could make the unquenchable blush and heart beat pop out at any time. In a word, it was a hazy and restless prepuberty full of innocence. )