Starting as a Grandmaster, all of my cultivation techniques are at max level.

With Xia Jin's intervention, the berserk aura of the three demon kings in the Boundless Sea gradually subsided, and the three enormous beasts, as large as mountains, finally regained their basic rationality under the shroud of seven-colored light.

Xia Jin stared coldly at the three figures digesting the essence blood, and simply sat down cross-legged in the void.

Because he also knew that such a breakthrough wouldn't happen so quickly; ten days or half a month would already be considered fast.

Time is slowly passing by.

On the first day of fully refining that drop of golden blood, the excruciating pain within the White Ape King's body finally subsided slightly, perhaps because he gradually adapted.

The golden energy surged through his body like a wild horse, causing the skin beneath the white ape king's fur to crack and then rapidly heal, making him look quite frightening.

Although he looked quite pitiful on the outside, with each tearing and reshaping of his internal organs, the White Ape King's body became even more resilient. A faint golden luster gradually appeared in his eyes, as if a cluster of golden flames had ignited.

On the second day, the Nine-Headed King also underwent changes. The nine snake-head totem on his neck no longer hissed wildly as before. Similarly, a golden scale seemed to have grown on the forehead of each snake head.

The seawater beneath the surface, which had been steaming up into a thick fog, was now slowly dissipating.

The Black Wing King, one of the three demon kings, finally changed on the third day, and this change began to appear on his wings that blotted out the sky.

Golden light began to emanate from between his originally dark wings, and with just a casual flap, even the highly corrosive white mist of the Boundless Sea was shredded by his wing wind.

His aura steadily rose from the middle stage of the Saint Realm, and he himself could clearly feel that his aura seemed to be advancing towards the high stage of the Saint Realm little by little.

The fourth day, the fifth day, the sixth day...

Above the boundless sea, the figure of the three colossal beast changes visibly every day.

The White Ape King's size increased dramatically again, from hundreds of feet to nearly a thousand feet tall, and its white fur transformed into silver-white.

The nine snake heads on the neck of the Nine-Headed King resembled nine crowns.

Blackwing King's entire body has turned almost entirely into a dazzling gold. Perhaps "Golden Wing King" is a more fitting title for him now than his former title "Black Wing King".

On the seventh day, the White Ape King let out a deafening roar, and a vast white beam of light burst forth from his mouth, instantly squeezing out a huge depression several miles wide from the Boundless Sea below.

High-level Saint Realm!

That's right, among the three demon kings, he was the first to break through to the high-level Saint Realm.

"Hahahaha!! Is this the power of a high-level Saint Realm expert?" The White Ape King slowly closed its massive maw, a ferocious smile appearing on its face.

"Wait, something's not right! This isn't over yet!" His expression suddenly changed.

Indeed, just when he thought everything was about to end, the wisp of golden essence blood deep within his body, which had not yet been fully refined, suddenly became active again, transforming into an extremely pure source of power that silently merged into the deepest part of his soul and flesh.

A look of unbelievable ecstasy flashed in the White Ape King's enormous golden eyes.

He clearly felt that after the essence blood was completely integrated, his divine sense seemed to touch an extremely distant barrier.

Although he couldn't cross it yet, he could clearly feel the existence of that door.

The threshold to the Great Perfection of the Sacred Realm!

He hadn't even finished the advanced stage of the Saint Realm, yet he had actually reached the threshold of the Great Perfection of the Saint Realm directly with that drop of golden blood.

"It seems that, based solely on talent, among the three demon kings, you possess the strongest talent!!"

Suddenly, Xia Jin's voice reached the White Ape King's ears, immediately calming him down from his excitement.

"This is all thanks to the opportunity bestowed upon me by you, sir. Without you, no matter how strong my talent, it would be almost impossible for me to even reach the advanced stage of the Saint Realm in this lifetime, let alone hope to touch the threshold of the Great Perfection of the Saint Realm!!"

The White Ape King took a deep breath and bowed respectfully to Xia Jin.

"Enough!! I don't need these formalities. Get familiar with your current level!" Xia Jin glanced coldly at the White Ape King and then closed her eyes again.

"Yes, my lord!!" The White Ape King nodded, glanced at the Nine-Headed King and the Black Winged King who were still breaking through, and walked to the side and sat down cross-legged with a proud look on his face.

On the eighth day, the nine snake-head patterns on the Nine-Headed King's neck simultaneously roared to the sky, and nine-colored light shot into the heavens. His aura also surged, and he steadily stepped into the high-level Saint Realm.

"High-level Saint Realm!! I, the King, have finally stepped into this realm one day!!" After concealing his aura, King Jiuying excitedly threw a punch into the air.

"Huh!? This damned monkey actually got a step faster than me."

His smugness didn't last long before he saw the White Ape King, who had already completed his breakthrough, raise an eyebrow at him, and his face darkened.

However, due to Xia Jin's imposing presence, he dared not be presumptuous. After bowing deeply to Xia Jin, he sat down cross-legged and began to familiarize himself with his power.

On the tenth day, the Black Wing King, one of the three demon kings, finally completed his transformation into a high-level Saint Realm expert. A terrifying spatial storm swept outwards from him, turning the sea surface within a thousand miles upside down.

The aura of a high-level Saint Realm expert was also released from his body without reservation.

"High-level Saint Realm!!" A hint of joy flashed in Black Wing King's eyes, but after seeing the aura emanating from White Ape King and the others, he hid his joy in his heart.

Xia Jin's gaze slowly swept over the three demon kings, and she nodded in satisfaction: "Not bad, just as I expected. All three of you have stepped into the advanced stage of the Saint Realm. White Ape King, you do have some good fortune; that wisp of essence blood allowed you to touch the threshold of the Great Perfection. Remember, cultivate diligently and don't be impatient for quick success."

The White Ape King nodded hurriedly and bowed again: "Your subordinate understands, thank you for your guidance, sir!"

Xia Jin slowly stood up, looking towards the other end of the Boundless Sea. "Alright, I have given you all the opportunities I promised! From now on, the Heavenly Alliance Army, composed of demons, you will all train well for me."

"Once you've refined it, I'll bestow upon you a great opportunity."

This last sentence caused the three demon kings, who were still immersed in joy, to simultaneously light up their eyes and breathe more heavily.

The White Ape King and the Black Wing King exchanged a glance, their eyes filled with ecstatic joy.

Although King Jiuying's expression remained aloof, the faint red light flashing in his vertical pupils revealed his inner excitement.

Above the high level of the Saint Realm, if there is any further fortune, there is only one: the Great Perfection of the Saint Realm!

However, Xia Jin had not finished speaking.

"Don't be too happy yet, this opportunity of mine didn't come easily!! Allied forces, if you don't refine it well... then you should know the consequences!!"

The three of them trembled almost simultaneously. Although the mythical aura surrounding Xia Jin had subsided, the oppressive feeling still made them feel as if they had fallen into an ice cave.

The White Ape King and the others immediately responded in unison, "Rest assured, sir!! Your subordinates will not dare to slack off! We will devote all our efforts to training the Heavenly Alliance Army, and we will make sure to satisfy you!!"

"That's good!!" Xia Jin nodded and slowly withdrew her gaze.

"My lord... if I may be so bold as to ask, why have you suddenly established the Heavenly Alliance Army and ordered us to train them properly? Is something serious about to happen again?"

The White Ape King seemed to have thought of something. After secretly glancing at Xia Jin, he cautiously asked.

Blackwing King frowned and replied, "My lord, in this universe, the alien races have been basically wiped out, and the human and demon races are both under your control. There shouldn't be... anyone who can threaten you now, right?"

Although the Nine-Headed King did not speak, his eyes were also filled with doubt.

"Nobody here?" Xia Jin suddenly chuckled.

"Have you forgotten that on the other side of the Boundless Sea, there exists that source of darkness?!"

The expressions of the three demon kings changed simultaneously in that instant.