The younger sister had spent a relatively long time staying with her grandparents, so she felt a deep affection for them. As for her maternal grandparents, she had only spent a short time with them, knowing simply that they treated her well, but if she had to choose, she still preferred her paternal grandparents.
Lin Yu didn't feel strongly either way and had rather ordinary feelings toward his maternal grandparents. He always felt that his mother's relationship with them was somewhat off; his intuition told him that they must have treated his mother poorly in the past. Although everything seemed fine now, something definitely must have happened back then, so he was still observing them.
As for his grandparents, because his younger sister liked them, he followed suit and liked them too.
Chapter 318