"The other is hell" comes from the play "Confinement" by the famous existentialist philosopher Sartre in the 20th century: three ghosts who are imprisoned and waiting to go to hell, constantly deceive and torture each other in the process of waiting, and finally they suddenly realize that there is no need to wait for hell, the three of them are already deep in hell, hell is not a sea of swords, mountains and fires, always with others, this is hell itself.

In Sartre's philosophy, "self" and "other" are both existence itself, but this existence has a subject and object, and the two are connected through "gaze", which is a relationship of mutual opposition. Sartre argues that everyone struggles with others for the subjectivity of the self, and that the "self" and the "other" try to make the other their "object" in the process of gazing at each other, and that the other is the source of conflict.

Sartre believes that in the process of interpersonal interaction, there is a struggle for subjectivity, even in love, and the imaginary romantic love is just a deception, and the experience of love that does not distinguish between each other and becomes one is nothing more than an illusion at the beginning.

However, Sartre's advocacy of "others are hell" does not always have a pessimistic attitude towards getting along with each other, and this sentence can actually be understood as the following three meanings: rational treatment of others' eyes, rational treatment of others' evaluation, and rational view of oneself.

Further extension, human beings are social animals, under the premise that survival is the first need of civilization, the closedness of human thinking determines that the interaction between people and people is always carried out in the chain of suspicion, the most famous chain of suspicion is expressed as: "I don't know what you think I think I think you think of my ......", in this chain of suspicion and the subjectivity system of "self", in fact, the ultimate meaning of "others are hell": the ultimate goal of human beings should be to constantly find themselves.

As the famous German philosopher Friedrich Wilhelm Nietzsche said in "The Other Side of Good and Evil": "When you are staring into the abyss, the abyss is also staring at you." "When wrestling with the devil, beware of becoming a devil yourself—if you doubt unlimitedly, you will inevitably become the creator of doubt, so that the answer itself will eventually become part of the problem.

"People are always dissatisfied when they are not free, and they are always panicked when they are free." Perhaps, dodging the "problematic trap" itself is the best way to find the answer, because love melts everything, just as the sun will still rise tomorrow.