Xu Hao is her lover, and he carries her curiosity and understanding of the world of men. The beginning of summer also means the same thing to Xu Hao. We exist as individuals apart from others, but at the same time we are only one member of our gender.
He is her man. But he's just a man.
She is his woman. But she is just a woman.
It is always the case that the world learned through in-depth communication is more interesting than the world of oneself.