The countless tribes of the major Demon Domains in the Heavenly Demon Realm have all set up layered array formations, killing arrays, illusion arrays, and defensive formations, linked and interlocked, with strong defenses. If the Biluo Alliance's various armies attempt a sudden attack without sufficient breaking formation treasures, they will surely suffer a great defeat!
In fact, when Biluo was attacked by the worlds of demons, ghosts, and gods years ago, they used this approach, allowing each sect to use their mountain gate as a stronghold to resist the invasion of the powerful enemies from the Demon Alliance.
The Demon Clan suffered significant losses back then, as countless demons fell in the sects' mountain protection arrays while attacking various sect mountain gates.
