The profound Dao is ever-changing, full of mystery, the unknown, and uncertainty.

The character 玄 (xuán) itself means profound or mysterious.

"玄之又玄" means profound and mysterious, implying something subtle, formless, and unfathomable.

Therefore, during the Boundary Sea Era, any Supreme Being who fought against the Profound Venerable would be unable to understand the true nature of his Great Dao.

Even someone as powerful as a supreme being, when faced with the profound Dao, is like a child facing an incredibly complex math problem, completely unable to understand the situation.

The sky was getting darker and darker.

Chen Xuan and his group saw that all the glowing vegetation around them had turned pitch black, as if it had been splashed with black paint.

Immediately afterwards, Chen Xuan was surprised to find that the refreshing fragrance from the daytime had completely disappeared.

Instead, it had a strange, fishy smell!

This stench wafted in from all directions!

"It stinks!"

The Emperor of Fengdu wrinkled his nose as the stench grew increasingly pungent, eventually becoming choking.

Furthermore, as night fell completely, the stench became so intense that it felt like poison gas; inhaling it made people dizzy and slowed down their thinking.

"Why does this stench smell like the stench of a corpse?"

Chen Xuan's eyes swept around, and although he had already held his breath, he could still smell the strong stench.

Because this stench comes from all directions, you can still smell it even if you don't use your nose, which is very unpleasant.

"It does smell like a corpse."

The Emperor of Fengdu nodded, a look of doubt on his face.

Why does this place have a special fragrance during the day? A single whiff of it can soothe your mood.

But by night, it smells like a corpse?

One whiff of it and you feel like you're about to be suffocated.

"This stench of death, could it be..."

A chilling thought flashed through Chen Xuan's mind.

I've always heard that the so-called Xuan Domain is actually the remains of the Xuan Venerable.

The origin of this stench is not difficult to guess; it is easy to associate it with the smell of Xuanzun's decaying corpse.

However, once one reaches the divine realm, one can essentially preserve their physical body from decay. Even after billions of years, the body will only become a dried corpse, rather than rotting and smelling bad.

Unless it is some kind of incurable serious injury.

Could it be that when Xuanzun perished, he was seriously injured?

But who in this world can hurt him?

You should know that back then, Xuanzun was probably close to being the number one supreme being in all the heavens and myriad realms, if not the number one supreme being.

The only one who could surpass him was the elusive and mysterious Desolate Celestial.

However, he had no grudges with Huang Tianzun, and the two even had no interaction.

Therefore, his demise should have nothing to do with the Desolate Celestial Venerable.

If he truly perished due to severe injuries, then what caused his injury?

puff!

Just as Chen Xuan and the Emperor of Fengdu were pondering.

Suddenly, dozens of huge cracks appeared in the ground.

Immediately afterwards, hundreds of black vine tentacles shot into the sky.

Each vine tentacle is tens of meters or even hundreds of kilometers long, and when they burst forth, they look like giant pillars.

Bang!

These thick vine tentacles, like black whips, lashed fiercely at Chen Xuan and the Emperor of Fengdu.

Because the two of them were like outsiders who had suddenly intruded, and these vines were going to completely tear them apart and kill them!

"snort!"

A cold glint flashed in Chen Xuan's eyes as he wielded the Supreme Yin-Yang Sword and unleashed a slash.

Puff puff puff!

In an instant, he cut down dozens of vines that were rushing towards him.

At the same time, above the head of the Fengdu Emperor, a huge yellow seal floated, and when it pressed against the void, an ancient and special inscription appeared.

The inscription instantly flew towards one of the vines, and exploded as soon as it got close.

In an instant, the vine was blasted into powder.

The Yellow Spring Seal stamped the void dozens of times, like stamping a seal, creating dozens of inscriptions. Each inscription flew towards one of the vines, and in the blink of an eye, all the dozens of thick vines were shattered.

Chen Xuan swept his sword, and the sword energy soared into the air, with the momentum to sweep away thousands of troops!

In an instant, he severed all the remaining vines with a single sword stroke.

boom!

Suddenly, a violent sound came from deep underground in these cracks.

The next moment, the ground suddenly exploded, and a huge black vine, thousands of kilometers long and ten kilometers wide, shot into the sky.

"Such a big vine?"

The Emperor of Fengdu was greatly surprised and felt an immense pressure.

"No, it's not a vine, it's more like an insect!"

Chen Xuan's eyes narrowed.

Reminded of this, the Emperor of Fengdu raised an eyebrow. He instantly realized something, and his pupils suddenly contracted, as he exclaimed in shock:

"It's maggots! These things are maggots!"

Upon hearing this, Chen Xuan instantly realized something.

He immediately turned his head to look at the black vine tentacles that he had just cut off.

Then it was discovered that many of the vines, which had been split into many pieces, were still wriggling, in addition to bursting with juice.

"In other words, these things aren't actually vines, but maggots! Maggots that evolved after eating carrion!"

Chen Xuan instantly realized that what they had just killed were not vines, but maggots.

Hundreds of maggots, each hundreds of kilometers long and hundreds of meters wide, were all small maggots.

Each maggot is powerful enough to rival a Great God Emperor!

And now, the giant maggot in front of Chen Xuan and the others is several kilometers wide and thousands of kilometers long. It must be the king of maggots here!

His strength is comparable to that of an emperor!

"roar!"

Suddenly, the giant black maggot king roared angrily at Chen Xuan and the Emperor of Fengdu.

An incredibly strong, fishy stench assaulted Chen Xuan's senses, and just a whiff of it made his brain short-circuit.

"Get out of my way!"

With a furious roar, the Emperor of Fengdu caused the Yellow Spring Seal to rapidly grow larger in the air, becoming much larger than the Black Maggot King.

boom!

The next moment, the Yellow Spring Seal slammed down, hitting the black maggot king's body with a loud bang, slamming it into the ground.

But the maggot king kept wriggling, and the halo of light suppressing it kept trembling, as if the seal was about to be broken at any moment.

This is a true clash of emperors; the two sides are not far apart, and it will be difficult to determine a winner in a short time. Neither side can gain the upper hand.

Those like Chen Xuan, who can suppress opponents across realms, are among the very few.

"Brother Chen, hurry up and kill it!"

Seeing that the Maggot King was about to break free from the Yellow Spring Seal's suppression, the Great Emperor of Fengdu roared.