Lin Xiangyi, in the eyes of the school girls, is "unworldly" and only dares to look at him from a distance and never dares to approach him. He exists like the white moonlight.
As for Jiang Nianhuai, she was a "female classmate" who could do anything from skipping classes to fighting, smoking, and drinking.
On the surface, there seems to be no connection. In fact...
Lin Xiangyi×Jiang Nianhuai