Not yours, then whose?

"Outrageous! It wasn't easy for you to conceive this child. This is a blessing; how can we even consider ridding of it?!" Mu Sheng was livid and blamed his grandson fully. "This ungrateful chap, are you really intending to turn your back on your flesh and blood?! Wanrou help you out with all her heart, and it's all for your own good, too, but what about you?! You actually dare not to acknowledge your child! She's pregnant. If the child isn't yours, then whose?!"

She consistently maintained her virtuous image before his grandfather.

Naturally, the old man believed her words sans a sliver of doubt.

Instead, he thought his grandson to be an insensible chap with his inability to account for his own child.

"Ah Zhe… is truly the baby's father; why won't he acknowledge it?" She looked at her grandpa with eyes full of abject tears, her voice, as well as her body, quivering.