This kind of terrifying presence from Lan Rui was certainly startling. But Lin Zui didn't lose his calm.
He kept up his faint smile as he said, "I will show you my proof now. As for not ensuring this news won't get leaked...well, even in your current realm, you can't instantly suppress me. Even if you could, I have innate protection from my master that I can activate with a thought. And I will only give this treasure if you agree to a soul oath."
Lan Rui coldly narrowed her eyes. Unfortunately, again, everything Lin Zui had just said was right. Her prowess can indeed exchange moves with late Divine Rulers. But it wasn't to a point where it could completely suppress even ordinary early Divine Rulers'souls.
She would need to completely transcend the Divine Ruler realm for that to happen. Even Cain wouldn't be able to completely suppress Divine Rulers when he was in the Great Divine Sea realm.