Xiang Bei's reaction arc is very long, and he always gets the meaning of the story long after something happens. For example, she only remembered the joke told by her classmate in the third grade of junior high school and laughed uproariously after her freshman year of high school; or the teacher scolded her and she did not cry all afternoon, but just used a pillow to block her crying when she remembered it at night; a more clear example is that He Ju took care of Xiang Bei throughout high school, but Xiang Bei only realized it after He Ju went abroad for a year.
"He Ju, I'm sorry..."
Purpose: Cherish the present moment