Last year, the violent video of Sister Xiong shocked us about the violence of post-90s. And then, the video of girls stripping a girl and insulting her also let us see the ferocity of this group of post-90s. It's not excessive to use words like ignorant and self-abandonment on these children. But with the frequent occurrence of such phenomena, what have we done? What have we done about the education of post-90s? Are more and more violent videos guiding the behavior of teenagers? Is this cool? Taking ignorance as personality. We, the post-80s, were once considered as a lost generation too. When...