Su Jie is a good friend of Lin Zhe's sister.
She was an orphan. Su Jie was twenty and Lin Zhe was only eighteen.
Sister Lin Zhe and his parents sent his sister to study at university.
I haven't been able to return home since then.
From then on, it was Su Jie who took care of the mute Lin Zhe.
From then on, Lin Zhe fell in love with that gentle yet strong sister.