Actually, there was nothing to sow discord. Yan Jinyu could tell at a glance that Yuan Yuan and Huo Sisi didn't have a deep relationship.
As for why Huo Sisi invited Yuan Yuan over even though they clearly didn't have a deep relationship, perhaps it was… to cover her tracks?
"What are you talking about? I don't mind at all. I'm just a little surprised. Yuanyuan, your brother's personality is really different from yours."
Seeing that she was smiling as usual, Yuan Yuan hid the emotions in her eyes and smiled as usual. "Yes, it's probably because Xi'er followed Grandfather to Country Y when he was young and grew up by Grandfather's side."