Being able to activate this Immortal-binding Demon-locking Ding should be because it is his own treasure, and he did not directly use the Immortal-binding Demon-locking Ding to fight, but only let the mother bug release the soldier bugs, which he was still able to do.
But even so, it exhausted all his mana.
"Quickly let them return."
Cao Zhen spoke toward the Immortal-binding Demon-locking Ding, and immediately, the soldier bugs flew into the ding. He then put away the Immortal-binding Demon-locking Ding and, with an awkward smile, looked at his senior sister and said, "Senior sister, what are you talking about? Why would I want to kill you?
Is it because of the ding?
If, I mean if, I were to say I found this ding, would you believe me?"
Immortal Lord Wu Xin's eyes seemed to suggest that Cao Zhen was insulting her intelligence.
