一梦南柯南柯一梦
[yī mèng nán kē nán kē yī mèng]
This online name originates from an old Chinese fable where someone experienced a beautiful dream in the south of China, implying that everything good or meaningful can end as suddenly and insubstantially as when waking up from a dream. It also implies a person's wish to stay in such a beautiful fantasy world.