A dark cyan, octagonal shield appeared in his hand, and he immediately hurled it into the air.
The shield swelled in the wind, growing to dozens of zhang in size in the blink of an eye and blocking the space before him.
Just then, the Lightning Shield exploded with a thunderous crash.
The remaining fireballs smashed into the octagonal shield one after another.
However, this shield was a top-grade defensive magic treasure. Though the fireballs were powerful, they could not harm it.
Seeing this, Zhou Xun finally relaxed, then reached toward his waist.
A flash of spiritual light transformed into a three-foot purple flying sword floating before him, lightning flickering all around it.
It was none other than his Mystic Thunder Sword!
He then formed Mystic Gestures with both hands, mana surging at his fingertips as he pointed at the sword.
"Crackle!"
Lightning flared brilliantly, and the thunder sword expanded in the wind, growing to more than ten zhang in size.
Seeing this, Zhou Xun changed his Mystic Gestures.
"Sword Shadow Unity!"
The thunder sword shook, and streaks of purple sword light split off, wheeling and soaring around Zhou Xun.
A rough count revealed no fewer than three hundred and sixty of them!
Then, under the control of his Mystic Gestures, they merged into the Mystic Thunder Sword one after another, like a hundred birds returning to the forest!
With every streak of sword light that merged into it, the thunder sword grew brighter.
When all the sword lights had fused into it, the entire thunder sword shone brilliantly, like white light, dazzling to the extreme.
The sword body began to tremble faintly, as though quivering with excitement for battle.
Su Yu's expression changed drastically when he sensed this.
With his discerning eye, he naturally recognized the extraordinary nature of