In the easternmost part of the Heavenly Demon Ancient Domain, there was a Black Lake of Death.

The water of the entire Black Lake of Death was swarthy, and a pool of stagnant water, even if the wind was howling, could not make any waves in the water in the Black Lake.

It's a forbidden area for life.

Even if it is a demon beast with a powerful body, as long as it steps into the black lake of death, it will be corroded by the flesh and turned into a pile of white bones.

What's more important is that there are some highly poisonous black gas gushing out of the Black Lake from time to time, these highly poisonous gas columns are as small as 100 meters high, and as large as tens of thousands of meters. Once encountering the Death Black Lake Poison Gas Riot, the entire sky above the Death Black Lake is completely misty with poisonous gas, and even the powerhouses of the True Martial Realm cannot pass through the sky.

The Heavenly Demon Castle is in the middle of the Black Lake of Death.

"If it weren't for the secret map left to me by Bai Changsheng's predecessors, I really wouldn't dare to set foot here!" Jiang Chen stood on the edge of the Black Lake of Death, looking at the black lake in front of him, and muttered to himself.

On the secret map of the Heavenly Demon Castle in his hand, there was a path through the Black Lake of Death.

On this path, there were no columns of death gas gushing.

Jiang Chen's speed was very fast, and according to the route recorded on the secret map of the ancient castle, he shuttled freely, like a nimble flying swallow.

Boom –

Boom Boom –

Death gas continued to break through the viscous black lake and soar into the sky, and thousands of death gas columns were connected together, forming a highly toxic canopy.

There is almost no place for the entire Black Lake of Death.

Only the path that Jiang Chen walked was the safest, without any poisonous gas column blocking the advancing furnace.

It took two days for Jiang Chen to reach the center of the Black Lake of Death, which had an island in the lake. The island is a hundred miles in circumference, with a black sand beach around the Black Lake of Death. This beach is not easy to touch, and it cannot even be touched to the ground.

Every grain of sand on the black sand beach has been eroded by the highly toxic lake water all year round, full of poison, and the throat is sealed with blood!

"It's finally here......"

Jiang Chen flew over the black sand beach and landed on the land inside, breathing a long sigh of relief.

Although it was only two days, I was on high alert at all times to prevent the poisonous gas column from rushing out of the lake, and the two days of fear seemed to be as long as the past two years.

Taking out the secret map of the Heavenly Demon Castle and looking at it, comparing the secret map and the environment on the island, Jiang Chen looked to the east: "According to the secret map, there are three entrances to this Heavenly Demon Castle. Bai Changsheng and they followed the guidance of the secret map and walked first to the third entrance, but they gave up halfway for some reason. Re-selected to enter the first entrance, and got a high-level Xuan soldier, and then changed the route to enter through the second entrance, and got the Mixed Yuan Golden Pill. ”

"But there is only the third entrance that can really lead to the core area of the Heavenly Demon Castle!"

Jiang Chen's eyes flashed, and he flew towards the third entrance of the Heavenly Demon Castle.

It is a 100-meter-high mountain.

The mountain peaks stand like a magic finger on the island, and the entrance is at the foot of the peak, and the entire edge of the cave is a series of arches made of pitch-black skulls.

Each skull is extremely hideous, the eyes are empty, the whole body is pitch black, and the wind blowing through the skeleton will sound a 'whine' sound, which makes people feel cautious.

The pitch-black entrance is like a demon's bloody mouth.

"This third entrance is so scary. Jiang Chen smiled bitterly.

Get into it head-on.

This passage is very long, deep and dark inside, and you can't see your fingers.

"As mentioned on the secret map, this passage is called the Ancient Heart Refining Road, but the length is not even recorded on the secret map...... When is this going to be the end?" Jiang Chen looked at the darkness all around, and was helpless for a while, at this time there were only two choices, either to continue to move forward and go all the way to the bottom of the underworld.

The other way is to turn back and choose another entrance.

Jiang Chen only hesitated slightly, but made a decision to go all the way to the end!

Walking on a dark road that is silent and endless, is the most testing of the mind.

For anyone, if you have a clear goal for yourself, such as telling you that there are 10,000 meters ahead, as long as you persevere for 10,000 meters, you can get a rich reward. So no matter how hard and tired you are on the way, you can grit your teeth and persevere, and go all the way.

But if you don't have this clear goal, you just tell you how far you have to go, how long you have to go, and you don't know what to do in the end.

Ninety-nine percent of people will choose to give up!

"No wonder Bai Changsheng will choose to give up, and they don't know that they will go to the Year of the Monkey and the Moon......" Having said that, Jiang Chen did not give up, nor did he deliberately speed up, and kept moving forward at a uniform speed.

One day......

Two days......

Three days......

Before he knew it, he had been walking for seven days.

Swish!

A terrifying sword qi burst out of the air, and a gust of wind swept through the pitch-black corridor, and this fierce wind was incomparably condensed, like a spherical storm rushing forward. But as soon as he rushed two meters, it was an internal disorder, unable to maintain the form of a spherical storm, and burst out, and one after another strong winds shot out.

In the dark, Jiang Chen muttered to himself thoughtfully: "No, this move is still not right." The change in the sword move just now should be a little softer, and the wind fluctuations are fueled by the wind, allowing the storm sword qi to superimpose one after another, thus producing terrifying destructive power. But Storm Breaker is to be extremely restrained and compress all power, maintain spherical sword qi, and when it is compressed to the extreme, it will burst out at once!"

"I'll try again......"

The sword in Jiang Chen's hand bloomed with bright brilliance, and with the sword in one hand, he swung the second type of storm break that urged the sword technique of the "Wind God Absolute Spirit" again and again.

There is no pause under his feet, and he always keeps moving forward at a uniform speed.

Since the second day, Jiang Chen has been bored and has begun to study swordsmanship.

In this dark claustrophobic environment, it is more able to allow him to concentrate on studying swordsmanship, and his progress is also remarkable.

Although Storm Breaker is still immature enough, it has made him have a deeper understanding of wind fluctuations, and his power has doubled. At the same time, the "Xuanhuang Immortal Technique" continued to wash the Mixed Yuan Golden Pill, making Jiang Chen's True Yuan more and more condensed, and his strength in all aspects had made a lot of progress compared to seven days ago.

It's the tenth day in the blink of an eye.

Buzz –

Jiang Chen's feet paused, and the sword that swung forward bloomed with a touch of fine light, and a golden true yuan suddenly escaped from the sword body, followed by a golden light like an erupting firework, and the terrifying storm sword qi burst out.

Streams of storm sword qi condensed into a ball of spherical sword qi in front of the tip of the sword.

Within the spherical sword qi, the sword qi crisscrossed one after another, but it was extremely restrained, and there was not even a trace of sound.

Jiang Chen's pair of sword-like sword eyebrows jumped, and he snorted lightly: "Go!"

Hmmm-

The spherical sword qi rushed out violently, and the spherical sword qi continued to compress during the entire process, becoming smaller and smaller. When it rushed to the target location locked by Jiang Chen, it had already changed from ten zhang in diameter to five zhang in size.

Thundered!

The spherical sword qi suddenly burst open, and the sword qi that was compressed to the extreme scattered in all directions, forming a sword qi tornado, which was extremely terrifying!

"It's finally a success, and this storm has reached the realm of great success. If I had mastered this sword technique a few days ago, I wouldn't have had to urge the Mystic Devouring Method to deal with the Dragon Horn Demon Jiao. ”

Jiang Chen waved his fist excitedly, ten days of hard work had finally broken the storm and cultivated to the realm of Dacheng, which was worth rejoicing.

It's just that......

Looking in all directions, it was still pitch black, and Jiang Chen couldn't help but complain: "Malegobi, Lao Tzu has even deduced the second form of "Wind God Jue" to the realm of Dacheng, why hasn't this cheating corridor come to an end yet?"

Scolding, Jiang Chen continued to move forward.

Half an hour later, Jiang Chen's feet suddenly stopped, and the dark corridor, which had been dark for ten days, finally appeared a glimmer of brilliance......