When Yan Yan woke up from her dream in the early morning, her thoughts became extremely clear again.
She dreamed again, still in that classroom, a few minutes before class. She always had the same dream, which seemed hazy and clear. He was in the dream, but his face was invisible as always. Every time she wakes up from a dream, Yan Yan always laughs at herself. Even his appearance in her memory becomes blurry, but she always loves to dream about him. How reluctant is she to let go of him? What is the meaning of it? After all, she hadn't seen him in three years.