Changing faces faster than turning the pages of a book vs being shy easily, a shy boy
An Jia and Cheng Yang had a relationship when they were young. An Jia went abroad with her parents due to family reasons.
Because An Jia wanted to go back to Cheng Yang quickly, she finished the course early and got her diploma.
When the two met again, An Jia was the teacher and Cheng Yang was his student.
Intention: love