Cao Zhen's strongest attack was neither the Heavenly Illusion Sword Technique of the Heaven Illusion Sword Monarch nor his Nine Abnormal Phenomenon Golden Pills. It was the Prosperous Age Picture Record, which he had never revealed before everyone!
If he used the Heavenly Illusion Sword Technique or another Divine Skill to attack these Corpse Generals, he was confident he could slay them. However, he wasn't sure whether the remaining Corpse Generals would flee after he killed some of them.
After all, these Corpse Generals were not truly witless zombies.
He didn't want to, later on, have to remain on guard against these Corpse Generals causing trouble. To resolve them all at once, he needed to exterminate every last one of them in a single strike.
To exterminate these Corpse Generals, he first had to gather them together, then obliterate them with the strongest attack.
