Mo Wuji didn't even wait for Du Ju to return him his elder identity token. He opened his palm and the jade token went back to his hand.
He was here to collect a debt, so the more arrogant he was, the better. If he showed any favour to a cunning fox like Du Ju, his debt would suffer a severe discount.
Moreover, he knew that he couldn't destroy this Void Piercer Treasure Pavilion. The key thing that Mo Wuji knew clearly was that while his status wasn't low, he couldn't casually destroy it. It was true that the Pill Dao Immortal Alliance Sharphorn Branch had the ability to destroy this branch of the Void Piercer Treasure Pavilion, but having the ability and actually using it were two different things.