When Zhu Tong liked Dai Xue, he would stay in the alley where Dai Xue's house was for an hour or two. He would make various noises to attract Dai Xue's attention.
But Dai Xue's windows and doors were closed.
The window and door were not opened once.
But Zhu Tong persevered, and finally the window opened on the day Dai Xue finished the college entrance examination.
Concept: The moonlight is beautiful