Chapter 272: The Second Heaven-Slaying Sword

The black zircon contains metal, which is extremely hard. Even if he uses the Flame Sun Finger to tap it, and taps it multiple times, wasting a lot of true energy, he can only detonate a few feet square, not the entire black zircon.

Lu Chen released his soul power to investigate the situation outside the entire cellar.

It turned out that the black zircon layer above and below the cellar was very thick, stretching for several miles, and thousands of feet thick in the front and back directions.

The left side was the weakest, with a black zircon layer of only ten feet thick. Unfortunately, that was the exit, and countless guards were waiting to kill him.

The only thing he could think of was the right side, where the black zircon layer was about five hundred feet. If he had enough power, he might be able to create a way out.

Lu Chen sacrificed the Heaven-Slashing Sword and slashed at the right wall.

The Heaven-Slashing Sword was so powerful, but it only cut open a ten-foot square black zircon layer, and the power was far from enough.

To break through the entire right black zircon layer, at least five hundred cuts were required!

Five hundred strikes can be used, but the problem is that after the strikes, Lu Chen's physical strength and true essence have been consumed for the most part, and he needs to recover before he can strike again.

The spiritual essence and three-pattern spiritual energy pills are limited, let alone five hundred strikes, even fifty strikes cannot be supported.

The only way now is to break through the fourth level of Yuan Dan Realm!

The basic strength of the third level of Yuan Dan Realm is not enough, only 30 million jin of strength.

And the basic strength of the fourth level of Yuan Dan Realm is 60 million jin!

The basic strength is doubled, and the power of cutting the sky is increased even more.

If the second strike of cutting the sky is practiced, the power will be stronger than the first strike, and the power will be greater.

Lu Chen looked at the Chaos Pearl and saw that the pulse core was carrying the remaining spiritual energy and moving towards the new spiritual energy vein little by little. It seemed that he wanted to occupy this new spiritual energy vein.

Lu Chen stretched out his hand, probed into the Chaos Pearl, helped the pulse core, and pushed it to the edge of the new spiritual energy vein.

In the blink of an eye, the pulse core merged into the new spiritual energy vein with the original spiritual energy.

Soon, the pulse core sent a message to Lu Chen, saying that it had occupied the new spiritual energy vein, and Lu Chen could use it at any time.

Lu Chen grabbed the new spiritual energy vein, then sat down cross-legged, and practiced the Nine Dragons Return to One Decision, frantically extracting the rich spiritual energy from the new spiritual energy vein.

The reason why Lu Chen took out the spiritual energy vein to extract, instead of letting the Flame Dragon Vein enter the Chaos Pearl to extract, was because the two dragon veins working together were much faster and more efficient than one dragon vein.

The danger Lu Chen faced now was whether the Demon City Lord would come back before he broke through?

The Demon City Lord was a powerful Tiangang Realm expert and the strongest demon in the Demon City. If the Demon City Lord came back in time, he would be dead. Lu Chen could not defeat the Demon City Lord no matter what.

An hour passed, and there were only the noisy shouting and cursing of the guards outside the door, and the Demon City Lord had not returned yet.

The large amount of spiritual energy extracted by the two dragon veins was all transformed into streams of true essence to enrich the Chaos Pearl.

It must be said that this larger spiritual energy vein contained a lot of spiritual energy, which was also very pure, allowing Lu Chen to obtain more true energy faster.

Six more hours passed, and the black iron gate still did not open, and the demon city lord still did not come back.

However, the new spiritual energy vein had already absorbed a small circle, and the Chaos Pearl had already been filled with true energy and compressed to the limit.

Bang!

There was a loud bang in the Chaos Pearl.

The true energy that was compressed to the extreme rebounded and instantly expanded the Chaos Pearl, which doubled in size, making the space of the Chaos Pearl reach six hundred feet square.

The Chaos Pearl replaced the Dantian, and Lu Chen also broke through and crossed a huge gap.

The fourth level of Yuandan Realm!

Lu Chen did not stop the practice, and continued to draw spiritual energy from the spiritual energy vein to consolidate the newly promoted realm.

After another hour, Lu Chen's violent breath gradually calmed down, and the realm was finally consolidated.

Lu Chen then stopped the practice, took back the spiritual energy vein, took out the Xiaguang knife, and prepared to test the knife.

With his current strength, under the amplification of the double dragon veins, his own strength is as high as 180 million jin.

The first sword of the sky-slashing can be used at any time, and the power reaches the maximum.

With one sword, the black zircon layer was cut three feet on the spot. As expected, after breaking through to the fourth level of the Yuandan realm, the power of the sky-slashing has become much stronger.

After one sword, the physical energy and true essence were not consumed much, and there was still strength to spare!

Lu Chen continued to slash, and slashed several times in a row, and the physical energy and true essence were exhausted.

He drank a drop of spirit spirit liquid and took thousands of three-line spiritual pills before he recovered.

And the black zircon layer was only cut less than 20 feet, and it was still far from 500 feet.

Limited to the support of the spirit spirit liquid and the three-line spiritual pill, the first sword of the sky-slashing could not cut a way out.

Lu Chen gathered his mind, silently recited the formula of the second sword of the Heaven-Slashing Blade, slowly operated the mental method of the second sword of the Heaven-Slashing Blade, let the true essence of the Chaos Pearl quickly follow the specific route of the second sword of the Heaven-Slashing Blade, and finally injected it into the blade.

"Heaven-Slashing, the second sword!"

The space was broken with a sword, and the sword force rolled up a huge air wave, impacting the entire cellar.

All the sunworms were immediately killed by the air wave, and the walls of the cellar were also shaken by the air wave, causing the building on the top to sway, and even affecting the entire city lord's mansion.

Boom!

The blade fell, and the earth shook.

The heavy sword force directly shattered the black zircon layer by a hundred feet!

The second sword of the Heaven-Slashing Blade was so powerful that it was beyond imagination, but it emptied all of Lu Chen's physical strength and true essence.

Lu Chen stood with the sword, his face pale, his body shaky, as if he had returned to the time when he was at a low level and sacrificed the first sword of the Heaven-Slashing Blade.

Heaven-Slashing, it's really

too awesome!

After drinking the spirit essence and taking the three-pattern spirit pill, Lu Chen recovered quickly, and then

continued to chop!

After five consecutive chop, the black zircon layer on the right was completely opened, and finally mud and soil were seen.

Lu Chen relied on the power of chopping the sky to chop a way out!

The earth-type talisman chain with the secret of escaping the earth landed on his body, and Lu Chen could escape the earth and walk away.

However, in the exploded black zircon layer, after walking about three hundred feet, Lu Chen found a cave three feet square.

This cave was completely covered by the black zircon layer, because Lu Chen's chop happened to shake this cave out, otherwise no one would know that there was such a cave in this black zircon layer.

This cave is very unusual, with a terrifying aura flowing out, blocking any soul power exploration.

There is someone in the cave!

And it is a person with extremely terrifying cultivation!

Lu Chen thought for a moment and walked in decisively. If he didn't go in and take a look, how could he know what was inside?

This cave is buried deep in the black zircon layer and will never see the light of day. Even if there are people, they are already dead.

What if the dead leave some treasures?

That would be great!

How can you get the tiger cub without going deep into the tiger's den?

As soon as he entered the cave, the terrifying aura became stronger, pressing Lu Chen to breathe. Even if he released the majestic soul power, he could only resist half of the pressure of the aura. The other half of the pressure was still Lu Chen's responsibility.

In addition to the aura, there was also an ancient and desolate breath that came to his face, as if telling Lu Chen that it had been silent for millions of years.