To be the best leader, you must also be the strongest leader!

However, even with such high efficiency in refining fifth-tier, ninth-grade spiritual weapons, Sun Yi was still not satisfied, because there were still too few top-tier weapon refiners and formation masters among the human race.

Although there are quite a few Nascent Soul stage cultivators in the cultivation world of the Myriad Spirits Continent, and they are very strong, they are unable to lead the forging of the most advanced spiritual weapons.

Currently, most Nascent Soul stage cultivators focus their main energy on cultivation, and there are very few top cultivators who can participate in weapon crafting.

Of course, Sun Yi already had a plan in mind, but he still needed time to make arrangements.

After another top-tier spiritual artifact was forged, Sun Yi began to lead them in refining the Divine Soul Extraction System. They completed the system as soon as possible and set it up inside the Demon Locking Tower.

At this point, the demon souls of the demon kings inside the Demon Locking Tower were also put to use by the Qingyun Sect.

Especially those demon kings at the half-step demon lord realm, after their divine soul power was extracted, they didn't need the Qingyun Sect to consume any precious natural treasures; they could absorb the spiritual energy of heaven and earth from outside the Demon Locking Tower to recover.

As for the other demon kings, they need to be helped to recover using precious natural treasures.

Time passed slowly, and the entire Eight Extremes Star was developing at an alarming rate, with the strength of the cultivation world increasing every day.

At the very top of the Demon-Sealing Tower, in a space containing one hundred blood pools, one hundred demon kings are currently soaking in the blood pools.

One of the blood pools shimmered with seven colors, and the liquid in the pool was also seven colors, with a seven-colored dragon-snake soaking in the liquid.

This seven-colored dragon-snake is the Sea Serpent King that absorbed that drop of seven-colored essence blood. The Sea Serpent King has undergone earth-shattering changes since then.

He coiled in the center of the blood pool, his snake scales turning seven-colored, two spiral horns growing from his head, and four dragon claws growing from his belly.

It looks like a dragon, but its head is still shaped like a sea serpent. Its entire body is both dragon and snake, making it look very strange.

The Sea Serpent King was currently conserving its energy, focusing all its efforts on refining the last wisp of seven-colored essence blood.

The moment this wisp of seven-colored essence blood was completely refined, a power within the Sea Serpent King was fully awakened, and he suddenly opened his eyes.

Two seven-colored vertical pupils appeared in the Sea Serpent King's eye sockets, and at the same time, an extremely powerful bloodline force erupted from his body.

The Sea Serpent King burst forth from the blood pool, its body instantly breaking through the barrier surrounding the pool. It then began to swim in the air, and at the same time, a dragon's roar suddenly rang out from its mouth.

Ow...

The moment the dragon's roar rang out, the bloodline power emanating from the Sea Serpent King surged dramatically, enveloping the entire Demon Locking Tower in this powerful bloodline force.

In an instant, all the demons imprisoned in the Demon Locking Tower raised their heads and roared incessantly. These demon kings felt a terrifying bloodline suppression coming from above.

The patriarch of the Golden Dragon Clan raised his head, looking weakly at the sky above: "This is dragon bloodline. Damn humans, what have they done? Where did they get their dragon bloodline from?"

"Sect Leader, the Sea Serpent King has refined the Seven-Colored Essence Blood!" Elder Zhou Tong, who was in charge of enhancing the bloodline of the demon race, sent a message to Sun Yi immediately.

"Okay, I'll be right there." Upon receiving the message, Sun Yi immediately put down his work and headed straight for the Demon Locking Tower with Xiao Qi.

Soon after, Sun Yi teleported with Xiao Qi to the Blood Pool space and immediately spotted the Sea Serpent King hovering in the air.

Sun Yi's immense divine sense instantly enveloped the area and immediately saw the changes in the Sea Serpent King. At this moment, the Sea Serpent King had completely transformed.

Whether it's aura, bloodline, or appearance, everything is vastly different from before. The demonic body has undergone earth-shattering changes, and Sun Yi can sense that the Sea Serpent King is still in the process of metamorphosis.

The Sea Serpent King also noticed Sun Yi and Xiao Qi's arrival. With a flash of seven-colored light, the Sea Serpent King transformed into a handsome young man in his early twenties wearing a seven-colored python robe and landed in front of Sun Yi and Xiao Qi.

He knelt down on one knee before Sun Yi, placed his right hand on his chest, and bowed to Sun Yi and Xiao Qi: "Your subordinate greets Sect Leader Sun and Lord Xiao Qi!"

The Sea Serpent King felt deeply grateful to Sun Yi. After refining the Seven-Colored Essence Blood, he could better appreciate just how terrifying Xiao Qi's bloodline was.

"Get up, no need to be so polite." Sun Yi waved his hand.

"Thank you, Sect Leader Sun!" The Sea Serpent King stood up.

"His cultivation level has actually increased directly to the mid-stage of the fifth rank, and it feels like he's not far from the late stage of the fifth rank. That's quite an improvement. How does it feel?"

Sun Yi looked the Sea Serpent King up and down. After refining the Seven-Colored Essence Blood, the Sea Serpent King's realm had actually risen directly to the mid-stage of the fifth rank, and its aura was calm and its foundation seemed very solid.

"Reporting to the sect leader, I feel very good. My strength has improved a lot, and my bloodline power has become particularly strong. Moreover, after this advancement, I feel that I will be able to advance to the late stage of the fifth rank in the cultivation space in at most another month."

The Sea Serpent King looked confident; his improvement this time was enormous, far exceeding his own expectations.

Refining just a drop of essence blood raised his cultivation to the mid-stage of the fifth rank, something he never dared to dream of before, considering that Xiao Qi himself was only at the early stage of the Nascent Soul realm.

At this moment, the other demon kings in the blood pool had also stopped their cultivation. They had all transformed into their true forms and emerged from the blood pool, their demonic eyes looking at the sea serpent king with envy.

Being in the same space, they could naturally sense how much the Sea Serpent King had improved.

Blood Shark King, Blue Crab King, and Mermaid King were all on the same level as Sea Serpent King before, but now they feel an extremely powerful bloodline suppression from Sea Serpent King.

This suppressive force was even stronger than that of the Flood Dragon Clan. These demon kings knew that the Sea Serpent King had risen to the top in one step. While they were envious, the other demon kings became even more determined to follow the Azure Cloud Sect.

"Now that your bloodline has been enhanced, go to the cultivation space immediately for seclusion and fully absorb the purified demonic power to improve your realm, striving to advance to the half-step demon lord realm as soon as possible!"

"Sect Leader Sun, am I not required to go to the Weapon Refining Hall?" The Sea Serpent King was taken aback. He remembered that Sun Yi had previously arranged for him to study at the Weapon Refining Hall and the Array Formation Hall.

"I think your priority is to improve your cultivation. Once you've reached the limit of the mortal realm, which is the half-step Demon Lord realm, then you can start researching weapon crafting and formations. This way, you can achieve twice the result with half the effort."

"Very well, I will follow all of Sect Leader Sun's arrangements!" The Sea Serpent King bowed respectfully to Sun Yi once again.

Next, Sun Yi learned about the situation of the other demon kings in the blood pool from Elder Zhou Tong. He was quite satisfied with the current development of these demon kings, and then he left the blood pool space with Xiao Qi.