Lu Mello was blinded with his rage and the pain of losing his sister. She was his family, a person he cared for and loved so much. Learning that she was murdered was something that brought chaos inside him.
He didn't know who to believe, everyone could be the suspect, including his wife. It was just, more evidence was pointing at Shi Enxi. Even if it broke his heart, he couldn't let her get away this time, after all, it was all about his sister's murderer.
Learning that the body that was found wasn't his sister, relief filled his whole being. Even if it was just a small possibility, he really hoped that his sister was still alive.
Shi Enxi's words woke him up.
What if... She really didn't do it? Then he was accusing Shi Enxi of something she didn't do.
But he clearly remembered Lu Weichun's last words. She told him to be careful. Be careful of her.