If heaven is sentimental, heaven will also grow old. If man is sentimental, he will grow old early. This sentiment can be recalled, but it was already at a loss at that time. A few years ago, she was still rushing for work, struggling and working hard in a materialistic society. A few years later, she tasted both warmth and coldness in those two worlds, and experienced the most memorable thing in her life. Now she has returned to her original society, got married and had children, and lives an ordinary and uneventful life. Occasionally recalling her life in those two worlds, the faces and smiles of those people are still as familiar as before, but her mood is no longer what it was before. . . .