"Come on, say it: gran-d-pa," Billy said.
"Gram… Pa…" Christina said.
"Hehehe, amazing, right?" Billy said.
"Yes, it is indeed amazing…" Edward said with a loose smile on his face, but then he got serious again. "Still, why did you come with the kids alone? You should have brought my daughter as well."
"They are busy working," Billy said. "As expected of my kids, they are only one year old and they can even call their grandparents."
"I believe that my daughter and Natalie also contributed a lot in giving birth and raising such smart kids…" Edward said while frowning.