In a digital age where avatars and personas are everywhere,the ancient concept of persona provides us with a perspective for critical reflec-tion.From the masks of ancient Greece,the personage of modern philosophy,to the authors of modern literature,this concept has also under-gone constant transformation,and emotion has gradually become the core and key point of it.However,since the emotionalism characterized by masks and performances exposes the roots of the moral dilemmas of modern society,it is also necessary to find a way out.Downward neuroscience research,upward philosophical therapy,and horizontal micro-affects have become three impor-tant options.The friendship and negative community that have been expoun-ded by many European thinkers since Derrida may also be the fourth key line to guide us to continue thinking.