Chapter 668: Severing Saber Manor's Young Master Xiao Xie

The soul was an existence of extreme yin, and it could be considered similar in nature with the power of the dark origin energy. With the nourishment of the dark origin energy, Xiang Shaoyun's filthless soul further solidified. His soul power grew rapidly, reaching a level comparable to the soul of a third-stage Soul Foundation Realm cultivator.

The Nether Soul Domain also grew rapidly, its durability reaching a brand new level. With the current strength of his Nether Soul Domain, he could trap and kill a bunch of Sovereigns easily. Every single one of the ghostrunes had also undergone a thorough transformation. They now looked much fiercer and extraordinary, and their cultivation levels had also grown.

That was especially true for Gui Qi, who reached the eighth-stage Devil Emperor realm from the sixth stage. His pair of ghostrune wings was now dreadfully bewitching. Even so, the clump of dark origin energy had not reduced in size by much. That was because in this unique environment, the dark origin energy could endlessly replenish its energy from its surroundings.

At this point, Xiang Shaoyun had formed a tiny level of affinity with the dark origin energy. His will could now penetrate it deeply.

"Withdraw!" Xiang Shaoyun waited no longer and tried pulling the dark origin energy into his astral cosmos sea.

This time, he succeeded, and the entirety of the dark origin energy converged in his astral cosmos sea.

Xiang Shaoyun isolated the dark origin energy at a corner, not allowing it any sort of contact with the rest of his astral cosmos sea. The so-called origin energy was energy with zero impurity. If it made contact with other energies, its purity might be ruined, losing the perfect balance of its makeup.

The astral cosmos sea was something Xiang Shaoyun had personally formed. Thus, he could alter it as he wished. It wasn't a problem for him to make some empty space to store the dark origin energy.

But he soon found that after leaving the space of endless darkness, the dark origin energy started constricting, and there were indications that it was going to gradually dissipate. If it continued, it would become smaller and smaller until it eventually vanished.

At that discovery, Xiang Shaoyun muttered, "Looks like I need to increase my cultivation as quickly as possible before refining the entirety of this thing into my dark star. But for now, I should look for an exit."

After deciding on a direction, he started flying at full speed. He believed that this place was definitely not boundless in size. However, even after flying for an unknown amount of time, he still did not find anything. He almost sank into despair.

Here, there were no other sources of energy he could absorb. The only thing he could do was replenish his energy using spirit crystals while cultivating his other stars at the same time.

He finally couldn't take it any longer and took out the chakram as he muttered, "I'll split the space again! I refuse to believe I can't find an exit!"

He did so immediately. Powering the chakram with all his strength, he struck at a random direction.

...

Castle of Darkness.

This was one of Dragon Phoenix Academy's nine great cultivation zones. The castle was perfectly conserved, built with unique architecture. Each unit of the castle contained the unique architecture of a different race

.

The ancient construction at the center of the others was the actual place of importance within the Castle of Darkness.

It was rumored that the central building used to be a super expert's exclusive residence. His inheritance was contained within, which granted the building an extraordinary significance.

Within the Castle of Darkness, the most commonly seen life form was