Underground Chamber

If a formation didn't show its form, could one tell whether it's a Confinement Formation, Slaughter Formation, Illusory Formation, or Beguilement Formation?

It was just like fighting an unidentifiable spirit beast. If one couldn't even see its form and identify its flaws, how did one intend to kill it?

'You must be kidding!'

Those who knew the slightest thing about formations wouldn't utter such amateurish words!

"The Way of Formation is deep and profound, and it has a long heritage behind of it. It's one of the top occupations throughout the entire continent, paling little in comparison to even master teacher. Such profound knowledge, and all you can say is to decipher it? You sure know how to speak rubbish!"