Defrosting The Cold Young Master

A moment of vulnerability results in Ye Beibei being manipulated into marrying Young Master Gu, a wheelchair-bound man.
Having imagined an idle and prosperous life within an aristocratic family—who knew that she would instead be enslaved into becoming a young nanny every single day?
Ye Beibei smacks the table. "Liar, I want a divorce!"
Young Master Gu pushes a cute baby in front of him. "You want a divorce even when we already have a child? Dear Wife, wake up!"
"..." Ye Beibei stares in confusion at the adorable baby who looks exactly like her.
Can anyone tell her when she gave birth to a child?!