*Flashback*
Back when Raelle was born, the country was in unrest and everything was chaotic. Neither Raelle's father, Xiang Hulin nor Raelle's mother, Song Xin'ai expected that their argument would lead to the disappearance of their daughter. The worst part of that situation was that the couple were the last ones to even know that their daughter had been kidnapped.
Elder Xiang Tianyu and his wife, Wanda Wu did everything in their power to find their granddaughter. Even Mu Chenyan couldn't sit still at that time.
At that time, Song Xin'ai was given a choice. She could save her daughter, she just had to give up her research. But Dr. Song Xin'ai had been a stubborn woman, to begin with. She had staked even her marriage for her work. How could she not give up on her own flesh and blood? In fact, it was too easy for her to give up on her newborn daughter.
Well, there you go!
Now, you know what went down back then to create a rift between so many people. And even if these people are hurting on their own even after years, they are still unwilling to forgive each other.
Some wounds don't heal with time.