Xu Guinan once said to Xiang Bei, "I like to be dull, but you yearn for the light."
Xiangbei was very entangled, but it only lasted a day. It wasn't that he didn't love Xu Guinan enough, but that he cared more about his career than his career.
He longs for a bigger stage, he wants to fly higher, and he has to make a choice.
Therefore, Xu Guinan was the one he wanted to give up.
Purpose: Buried in no man's land