Gu Qingyuan has spent too much time and energy on Shen Biran, yet all this time cannot resolve Shen Biran's resentment towards him.
This is why Gu Qingyuan insists on doing this, but he has no choice but to consider why this situation has occurred.
Shen Biran has always been particular about the issues with Gu Qingyuan, but no matter how much she begrudges Gu Qingyuan's betrayal, in the end, she still has to face it.
She cannot completely let go of Gu Qingyuan, because she still cares about him.
Her concern for Gu Qingyuan causes her to lose her composure. Although she told Lu Xiao she won't care about Gu Qingyuan anymore, she can't help it; her heart still has feelings she cannot refute.
This is Gu Qingyuan, and it is a thought that Gu Qingyuan can never change.
Gu Qingyuan also knows that this is what Shen Biran thinks; their past together won't make him completely heartless.
