Mu Yunhao was a Martial Artist, so he would certainly know if Lu Zijia used forbidden Martial Arts secret magic to become Lu Zijia.
Of course, Mu Yunhao only had two guesses. The first one was that someone used forbidden Martial Arts secret magic to substitute Lu Zijia.
The second one was that Lu Zijia used forbidden Martial Arts secret magic to make herself stronger, which changed her personality as well.
The latter was fine. If it was the former, that would be a bit of a problem.
After all, they didn't know if Lu Zijia was their enemy or their friend.
Compared to Mu Yunhao's worries, Mu Tianyan seemed much more calm. "No matter who she is, she's my wife now. Besides, she won't hurt me."
At least for now, Lu Zijia wouldn't hurt him.
After hearing that, Mu Yunhao glanced at Mu Tianyan with a weird look, then finally nodded.
"Alright, if you're so sure, I'll believe you.