Si Yuchen was never right for her, yet Gu Xiaonuan—perhaps on a whim—agreed to marry him.
It could be that Si Yuchen brought significant changes to Gu Xiaonuan's life, changes that inadvertently benefited Shen Biran, sparing her from the worry of having her illness delayed due to inadequate medical care.
But for Shen Biran's sake, Gu Xiaonuan truly sacrificed a great deal.
Now, Gu Xiaonuan has come to terms with the situation. The deal between her and Si Yuchen doesn't necessarily have to be maintained through marriage; there are other ways to ensure it.
Gu Xiaonuan just wants Si Yuchen to continue treating her mother. Even if Si Yuchen stops being a doctor someday, Gu Xiaonuan is determined to entrust Shen Biran's care to him.
Si Yuchen is currently in a bad mood, and hasn't gone to the hospital lately.
As Shen Liang put it, Si Yuchen's sudden strike is because of her.
