"Something might have happened to the perpetrator's family…or to someone he loved and cherished more than anything else in this world…. That's his reason."
Though Wan Yi Jun spoke as if he was talking about the perpetrator of the murder, nobody knew that whatever he said was meant to Han Ze Min, too.
Just like Shu Li Li's case, Han Ze Min's motive to kill his cousin would be personal vengeance- to avenge the death of his first love.
If it wasn't for their family, he would have killed Wan Yi Jun long ago,
"You mean the perpetrator murdered Shu Lili and created havoc in the imperial city, just because he lost someone he loved?" Lao Yating added in a doubtful voice. As he thought more about it, his face got crooked as if heard something weird and looked around to check whether everyone think the same.