Before meeting Xu Yan, Jiang Mo thought that no one could enter her world; before meeting Jiang Mo, Xu Yan thought that he would never step out of his own world. After they met each other, they tried to get closer to each other. Jiang Mo opened a door in his own world, open only to Xu Yan; Xu Yan opened a window in his own world, only to see Jiang Mo.
Concept: There is always one person who is the exception among exceptions