Ning Gujun regretted so much that he never looked at Gu Xingyun again.
Ning Gujun couldn't imagine how helpless Gu Xingyun felt after he left.
He regretted it so much that he left at the airport without looking back.
Regret her cold refusal when Gu Xingyun begged him to look at him again.
Regret all the bad things he did to Gu Xingyun.
I regret not being able to love him properly...
Intention: Brave