The difference in living environment has created two completely different attitudes towards life. Jian Dong is optimistic and cheerful, just like the warm sunshine in winter. He always sees the bright and beautiful side of life, as if he is always facing the sunshine and never stops moving forward. Therefore, he would naturally not see that behind the bright and almost dazzling sunshine was a huge and boundless darkness, and in that black shadow, there was a young man from beginning to end, and his eyes never left.