独守一人独守城
        
            [dú shŏu yī rén dú shŏu chéng]
        
        
            Alone in the city, guarding for one person only. The user who chooses such an online name could be referring to their faithfulness and loyalty toward a special someone, despite geographical separations. Also, the term 'city' symbolically represents loneliness, as large cities tend to make people feel isolated from others.