One book, two time and space, four people, two different relationships
Wen Yuxin likes Xia Yizhe, but he doesn't want to reveal his feelings.
Xia Yizhe doesn't hate Wen Yuxin. He treats Wen Yuxin as his own pet and will never allow others to cause any harm to him.
Gu Zifeng regards Xia Yichen as his brother and the person he relies on the most besides Wen Yuxin, but he does not understand Xia Yichen's intentions
When Xia Yichen first met him, she regarded Gu Zifeng as her eternal partner, even if he didn't understand her feelings