The Four Hidden Sects possess a foundation that rivals that of the Ancient Clans, so it is hardly surprising that they harbor secret techniques on par with the unshared lore of those clans.
Fortunately, Mu Kuo, a powerhouse of the Emperor Realm, was right there by his side.
Had Mu Kuo not issued a warning, Su Lin himself would truly have failed to notice how devious and tricky this fellow's defensive methods were!
Chapter 656