"That's possible, right?" Instead of answering, Wu Jingguo asked back. "From the start, I didn't believe him one bit. Even if he keeps saying that he has no evil intentions towards us, I still don't believe what he says. I can't help but think he's hiding something from us."
Wu Jingguo just expressed his opinion regarding the Demon King after Yu Ming questioned him about the possible cause of the outbreak in Fushui Village. Even though it wasn't an answer that came from the Second Prince, Yu Ming knew that the young man was indeed suspicious of the Demon King.
"I'm a fish demon too, but you don't feel suspicious of me?" Finally, Yu Ming responded to the Prince.
How he slightly lowered his head when asking that question probably indicated that he was not very sure about how the younger man would answer his question. Maybe he wasn't ready to hear the answer from the Prince if he got a negative answer from him.