Why is Zhou Wang willing to let Ji Chang go?

Zhou Wang didn't want to kill Ji Chang, but he couldn't. Or Zhou Wang's mind is flawed, and his ideas are different from others. Although many people say that Zhou Wang is afraid of Jichang's divination, how can this self-righteous son of Zhou Wang be afraid of a little fortune teller?

In the TV series, Zhou Wang released Jichang only because Zhou Wang ate the meatballs made for Jichang by his son Bo Yikao. I just want to verify whether his patron saint is true or not.

As a result, Jichang himself figured it out, crustily skin of head ate meatballs, and thanked Zhou Wang by the way.

Zhou Wang saw that you were a liar, so I let you go. On the one hand, I let those people in your hometown think that I am informal and kind-hearted.

On the other hand, you can't pose any threat to me. Why should I let you waste my food? So I gave it to him.