Eleven-year-old Yang Yilan met Ye Zhi for the first time.
But she is a teacher and he is a student.
The distance of eight years old is a natural barrier and a taboo.
On the day of separation, he only said one sentence - "Teacher, goodbye."
Ten years later, he returned with a sharp look and a wanton smile: "Sister, I have grown up, and I will start chasing you."