The opposition of the four powers, the opposition of the ground and the underground, even the opposition of the stream of consciousness and the popular. The omnipresent opposition leads to singleness and scarcity: there is no Renaissance with a hundred years of peace, trying to look down on all living beings to eliminate humanity, to stabilize the moral balance but to lose the deep feelings of the past and the present. Just like the single zither playing in the movie soundtrack and the lack of unbalanced composition created by the long mirror, this is the eternal dilemma of human beings