The demon grabs the fabric of Huaisang's collar, but doesn't end up having to drag him anywhere, as the other resists the urge to flee. So, the hold is there mostly just to keep him in one spot and prevent him from flinching away.

He holds him still so he can repeat the first thing he'd done back down in that cave--leer close to his face and neck, breathing in the other man's scent. Taking several long moments to be absolutely sure about what he's smelling, this time.

As he'd noticed before, this "summoner" smells weird. It's wrong, and now he knows why.

After a minute or two of bullying, the demon slowly looses his grip and moves back to his side of the table... chuckling to himself. Really, he has a good little laugh over it.