Murong Rui has always had a great grievance against Song Qiao, even harboring hatred towards her.
Part of the reason is that her parents died because of Song Qiao's parents, and even though Song Qiao is innocent in this matter, Murong Rui still hates her because of it.
Another reason is that Song Qiao married Lu Jingchen, while Murong Rui never saw Lu Jingchen as her brother but rather grew up with the intention of marrying him.
Moreover, since Lu Jingchen is almost ten years her senior and was very kind to her during her childhood, he gave her a sense of security she had never felt before, and it was from that time that Murong Rui's feelings for Lu Jingchen started to subtly blossom.
