At Boundary Mountain, Lu Changsheng's expression turned solemn. He fixed his gaze on a frightening figure several dozen zhang away. It was a creature with a bull's head and a human body—a demon!

The pitch-black demonic power radiating from its figure was like thick ink, and fiendish qi surged outward from it like waves of heat. Even at a distance, he could feel its oppressive force. It was dangerous!

This was Lu Changsheng's first time seeing a demon. Just from instinct alone, he felt a trace of danger. A demon's fiendish qi was not naturally formed. It required countless acts of slaughter to condense into something so dreadful. Just by looking at the fiendish qi on it, Lu Changsheng seemed to gain a deeper understanding of "slaughter."

A spark of inspiration flickered in his mind. He stood on the verge of forming Slaughter Intent.

He had only taken a single glance at this demon, yet he was already on the verge of comprehending Slaughter Intent. That alone showed the heaviness of the demon's killing aura. Demons were inherently bloodthirsty. Most of them carried immense killing intent, and when they encountered martial artists or Immortal Masters, it would always be a fight to the death.

There was no avoiding it. The demon had already set its sights on him. Lu Changsheng treated it as a formidable enemy and prepared himself.

There were many rumors among martial artists, but regardless, martial artists always seemed to be at a disadvantage facing a demon. This remained true even for Immortal Masters. Demons were notoriously difficult to kill. Those with innate abilities were even scarier.

The demon before him was powerful. He could feel it clearly. As he met its gaze, it felt as though an invisible saber were slicing into his body.

In the demon's eyes, he was nothing more than prey. That look alone was enough to send a chill through Lu Changsheng.

"A human and a martial artist at that. I love the taste of martial artists. Much better than those frail immortal cultivators." The demon licked its lips, eyes gleaming with hunger.

"You want to eat me?" Lu Changsheng didn't hesitate. "Then try."

At once, the Heart Sword within Lu Changsheng's Mind Space trembled.

Whizz! Whizz! Whizz!

Ten strikes! A full ten Heart Swords shot out and sank into the demon. This was only the beginning. Lu Changsheng could tell how powerful this demon was, so he had to go all out and leave it with no room to recover.

Buzz!

As the Heart Swords struck, Lu Changsheng unleashed his Domains. Not just one, but five Domains at once! The Storm Domain, the Wave Domain, the Starry Sky Domain, the Waterfall Domain, and the Saber Domain materialized at once, pressing down on the demon with full force.

ROARRRRR...

The demon was enraged. The Heart Swords tore through its mind and brought intense pain. With five Domains bearing down on it, the pressure on it grew even heavier. Its figure swelled and expanded from just over one zhang to more than three in an instant. This was its demonic transformation. Its true form was finally revealed.

Lu Changsheng stared at the towering figure. Waves of fiendish qi rolled outward and flooded the surroundings.

"Kill!"

Lu Changsheng's mind shifted, and all five Domains erupted at once.

Whoosh.

Within the Saber Domain, countless sabers fell at the same time. Waves surged forward and crashed against the demon. Storms tore through the void. From the dark starry sky, a hundred zhang waterfall came crashing down, seemingly trying to wash everything away.

BBOOMMMM!

A powerful explosion rang out. Then everything fell silent. The sabers, the waves, the storms, the starry sky, and the waterfall all materialized and overlapped. The waterfall struck with overwhelming force and swept the demon away.

The surroundings grew still. Lu Changsheng held his breath, and his expression was tense. Though it seemed like he had used many abilities, they had all been unleashed all at once. He had even prepared a Teleportation Talisman. If there had been any signs of danger, he would have crushed it and escaped.

When the dust settled, he stared at the spot where the demon had stood, yet nothing remained.

"It's dead..."

Lu Changsheng let out a small breath of relief. The demon was dead, and its ashes had been washed away by the Waterfall Domain. With the pressure of five Domains, even the spirit beast escape techniques would fail, let alone a demon.

Just moments ago, the demon had been acting so ferocious with its surging fiendish qi. It had forced him to go all out and even prepare an escape route, yet... this was the outcome?

"Demons are weaker than I thought..."

He had just advanced to the Divine Treasury Realm and had just recently nurtured a Domain to Perfection. Even so, after reviewing his battles with demons and Five Element Beasts, he now had a clear sense of their strength.

Five Element Beasts were clearly weak. At first, he had assumed his Heart Sword simply countered them. But this demon had been genuinely powerful, far from the weakest of its kind. And even so, it had still died.

"An Immortal Master's strength comes from a mix of enchanted artifacts, talismans, formations, and spells. Demons rely on their bloodline, their bodies, and their innate abilities. But for someone at Divine Treasury, it's all about materialized Domains and mental techniques. So their actual combat strength doesn't really depend on how big their Mind Space is."

A sharp glint flashed in Lu Changsheng's eyes. He had never taken the time to sort this out before. Only after fighting both spirit beasts and demons at Boundary Mountain did he begin to form a clear understanding of a Divine Treasury martial artist's ways of fighting.

Most Divine Treasury experts relied on rare treasures to expand their Mind Space. Treasures formed the foundation, while Domains played a supporting role. As for secret techniques that could be placed within the Mind Space, they were even rarer. Therefore, the strength of a Divine Treasury expert did not depend on the breadth of their Mind Space, but on how many Domains and secret techniques had been nurtured within it.

Lu Changsheng, however, was different. Though he had just advanced, he already had four combat Domains and had brought another to Perfection for a total of five. On top of that, he wielded a mental secret technique, the Heart Sword True Mantra.

More importantly, his Domains could combine into two even stronger fused forms. When taken together, his strength would become extremely formidable. It far exceeded that of an ordinary newly advanced Divine Treasury expert.

However, it still was not enough. Five combat Domains were far from sufficient. Lu Changsheng felt that without dozens at his command, he would never feel truly secure.

He turned and left. As he passed a patch of grass, he paused and gave it a long look. In the end, he chose not to act and walked on.

Not long after his departure, the grass shifted. Five figures emerged from within. They were all Divine Treasury martial artists.

"That guy just now was a Divine Treasury martial artist? That was insane. Five Domains at once, plus a mental technique. He wiped out that demon on the spot. Not even a corpse was left behind."

"Good thing we had that concealment formation and spent a fortune on spirit stones to keep it running. Otherwise, if that Divine Treasury expert had discovered us, we would have been in serious trouble."

"Yeah, this formation's really something. That demon actually found us earlier and started chasing us, but once we activated it, it lost track of us. That guy couldn't find us either."

"Oh? You really think that Divine Treasury expert didn't notice us?"

"Truth is, he already knew we were there. For some reason, he just didn't make a move. We should count ourselves lucky."

"Let's get out of here. We came to Boundary Mountain to catch a Five Element Beast, and after all these days, we didn't find a single one. Instead, we ran into a Divine Treasury martial artist and a demon instead. Let's move!"

The five Divine Treasury martial artists broke out in cold sweat. They did not linger and quickly withdrew.

Meanwhile, Lu Changsheng remained at Boundary Mountain and continued searching for a Five Element Beast.