Shen Zhiyu didn't know when Gu Yanzhou entered her heart.
Maybe it's that cup of hot tea on the rooftop. Maybe it was the restrained and patient look in his eyes when he looked at her. Or maybe after they separated, she learned that he flew once a week just to stand far away for a while out of her sight.
She wore the shell of a genius doctor for so long that she forgot that there was an ordinary person underneath the shell who made mistakes, was afraid, and ran away.
And he told her with silent waiting - that imperfect you is the whole reason for my love.