"Too troublesome!"

This is why Su Yu has never used this move to refine a BOSS Inner Core to enhance attributes. Besides the few times of dragon transformation, the main trouble is right here.

Merely devouring an Inner Core takes so long to wipe out the remnant spirit; it’s too troublesome.

After thoroughly refining the Inner Core, Su Yu finally had time to look around.

He casually opened the Sea Suppressing Realm Gate with a wave, and a blue dragon flew out from it.

Ao Run glanced around and said to Su Yu:

"Young master, this is the Cyan Sea Domain. I remember it was from here that we headed to Blue Mountain."

The red dragon looked down, sweeping his gaze across the ground littered with broken giant rocks, showing obvious signs of human activity, with some even retaining remnants of formation patterns. It was clear this was once a teleportation platform.

Su Yu looked at the Vast Sea and asked:

"Can this formation be repaired?"

The Vast Sea nodded and said,

"It can be repaired, but I think rather than repairing, it would be simpler to rebuild."

"Then let’s rebuild it. Do we have enough materials?" 𝒻𝑟𝘦𝘦𝘸ℯ𝒷𝑛𝘰𝓋ℯ𝘭.𝘤𝘰𝘮

Just as the words were spoken, the red dragon suddenly looked up to see a sea snake, larger than the previous one, rushing towards them from the dark waters, spewing a jet of dark green toxic breath:

"Dragon Race, you’re doomed!"

"It’s you who will die!"

Before Su Yu could act, Ao Run excitedly charged at the sea snake, entangling it in battle.

Seeing them fight as if they were mortal enemies, Su Yu thought of something and asked curiously:

"Could it be that the Sea Snake Race was the one that destroyed the Dragon Palace in the Cyan Sea Domain back then?"

Saying this, he swung his massive body and charged forward, clutching the sea snake with his huge dragon claws from behind and biting down.

This sea snake was level 256, much larger than the previous one, but the result was no different.

Even Ao Run found it difficult to defeat, and once the red dragon joined, it was left defenseless, getting torn apart by Ao Run, and its Inner Core was swallowed by the red dragon.

However, before he could start refining the Inner Core, the Vast Sea, who had been standing aside without acting, suddenly sensed something and sternly shouted:

"Not good, many sea snakes are coming."

Su Yu’s heart tightened, and without hesitation, he spat out the Inner Core, immediately sensing dozens of large figures exactly like the sea snake he had just intercepted, rushing towards them in an instant, revealing thirteen sea snakes with levels ranging from at least 220 to a highest of 285, all legendary templates.

Cold, sinister eyes fell upon them, and a chilling voice, laced with surprise and a hint of delight, sounded:

"Unexpectedly, there’s still such a big fish that slipped through the net here. Surround them, my little ones."

Thirteen massive sea snakes split apart, forming a circle, and numerous shadows surged from behind, upon closer inspection revealing numerous enormous figures, either humanoid demons or fish-headed beings with arms and legs incomplete in form, all aquatic race demon soldiers.

These demon soldiers had high levels, with the lowest being above level 110 and the highest above level 150, generally being ordinary templates with a few elite templates.

They wore fish scale armor or keratinous demon armor and wielded various weapons, arranging themselves into formations with impressive presence.

The Vast Sea immediately took out the Nine-Ringed Immortal Banner and tossed it, quickly expanding into a three-thousand-zhang tall immortal banner. Countless divine general reliefs on its surface lit up, transforming into beams of light forming high-level protective divine generals.

Over more than ten years of accumulation, Su Yu had slain countless high-level spirit monsters at the bottom of the Yuanjiang River, collecting demon souls. This Nine-Ringed Immortal Banner was already filled with ten thousand protective divine generals, all of which were high-level protective divine generals.

There were a total of 5000 Vajra Divine Generals, at least level 150 and at most level 199, with templates ranging between elite and terrifying.

The remaining 5000 protective divine generals were divided into five types: Geng Metal Divine Generals, Yi Wood Divine Generals, Gui Water Divine Generals, Bing Fire Divine Generals, and Xu Earth Divine Generals, with 1000 of each type, sharing the same level and template as the Vajra Divine Generals.

There were no protective divine generals above level 200, not because he lacked demon souls over level 200. Over the years, he had killed numerous high-level and experience monsters, accumulating several thousand demon souls over level 200, but the ninth-tier Nine-Ringed Immortal Banner couldn’t house protective divine generals over level 200.

The treasure must be upgraded to the tenth tier to accommodate protective divine generals over level 200.

Su Yu currently had 4 sources of the Heavenly Dao in hand, and it was estimated that at least ten would be needed to advance the Nine-Ringed Immortal Banner to the tenth tier.

The reason it required more than the Nine Heavens Purple Thunder Hammer was because this treasure’s source was stronger than the Nine Heavens Purple Thunder Hammer, hence needing higher upgrade requirements.

However, this artifact wasn’t useful at Blue Mountain before, so it wasn’t upgraded.

Now the environment in the Cyan Immortal Domain was different, with the demon forces here being very strong, and tens of thousands could rush in at any moment. Having a large number of protective divine generals over level 200 would prevent suffering those losses.

With The Vast Sea’s ample mana, he quickly summoned ten thousand protective divine generals to guard them.

Seeing this, the thirteen sea snakes stopped, with the one in the center shouting loudly:

"Kill!"

A multitude of demon soldiers surged forward, quickly entangling with the protective divine generals in a chaotic battle.

Many Vajra Divine Generals revealed towering ten-zhang true forms, forming lines at the front, while the Five Elements Divine Generals positioned themselves behind, continuously using Five Elements Thunder Skill and Five Elements Forbidden Skill to bomb back and forth.

These demon soldiers were all transformed from various aquatic races in the sea, essentially relying on physical strength and martial prowess to fight, with limited magic, typically water-based magic or innate racial skills, unable to compete with the Five Elements Divine Generals.

Yet there were too many demon soldiers, and with more joining from behind, Su Yu estimated the number to be seventy or eighty thousand.

Relying on the quality of the protective divine generals, victory was assured, but there would be significant losses.

Fortunately, upon dying, these protective divine generals would return to the Immortal Banner for rebirth, with a rebirth time of 24 hours, making prolonged battles feasible.