He marveled that she could still keep her heart as pure as light after all the torments of life, but could not hold up a green shade for her; he had to compromise and beat his head and blood in the metropolis, just to give her a blue sky; she stared at the gray profile picture on the screen, let out a long sigh of relief, and was no longer unable to breathe with heartache. This is reality, and it has taught batch after batch of young people to learn to relax.