The Netherworld that Xiao Baifeng said was only a hundred miles away from the place where the goshawk flew and fell, and with Zhang Yue's skills, it would soon arrive.

Xiao Baifeng said that the yin and underworld qi in this place is very heavy, and there are more empty spars in the opposite area, and when the goshawk flying city was exhausted, it deliberately flew to this area and fell, just to let the later crystal seekers have a place to stay, and his words should be true. ”

Zhang Yue thought as he released his divine sense to search carefully.

The ubiquitous Yin and Netherworld Qi interferes with the divine consciousness a lot, and it is also difficult to fly, so the monks who come in to carry out the mission need a map as a reference, if they search aimlessly, they may not find enough ten in the Netherworld after three months.

"Found it! Xiao Baifeng said the crack in the ground!"

There was a hollow crack in the ground in front of him, about seven or eight zhang wide, stretching for miles.

Zhang Yue walked to the side of the crack in the ground and looked down, it was dark and bottomless, and wisps of Yin Qi floated from the crack in the ground, but it was slightly thicker than other places, and it was not the level of the Netherworld.

If there was no news from Xiao Baifeng, Zhang Yue would definitely ignore this place even if he passed by.

After thinking about it, Zhang Yue first cast an invisible spell on himself before slowly reaching deep into the cracks in the ground.

It has been going down for about a hundred zhang, and finally it has reached the bottom of the valley, which is narrow at the top and wide at the bottom, like a gourd belly, and the bottom space is quite large, and when you look up, the sky is like a thin gray thin line that cannot be noticed.

On the rock wall at the bottom of the valley, there are some large and small cave openings, and gusts of yin wind blow out of the cave entrance, and the black mist is gusting, like a monster sleeping in the cave to breathe and spit.

"Some of these caves lead to the real Netherworld, and Xiao Baifeng can't tell which one it is, so he can only wait until the Yin Qi erupts. ”

The accumulation of Yin Qi in the formation will burst out at a certain time, a local like Xiao Baifeng is experienced, and can judge when the Yin Qi will break out from various signs, Zhang Yue does not have this ability, but he just needs to be patient.

Time passed slowly, and Zhang Yue was like a stone sculpture, not moving at all.

Suddenly there was a hissing sound from several holes, like the sound of air valves spewing air.

"It's coming!"

With a bang, the ink-like yin qi gushed out from the various holes, some sprayed slowly, just sprayed out and drifted in the air, and it could be seen that it was the shape of smoke, and some sprayed fast, directly a demon dragon sprayed out, shot into the opposite rock wall, making a rumbling sound, shaking the entire valley floor was trembling, as if an earthquake was about to occur.

In the sound of the surging of the underworld, there is also a crackling sound from time to time.

The Yin Qi disturbed the divine sense, and Zhang Yue could only observe the scene of ten zhang around him.

Suddenly, a flash of white light flashed, smashed on the rock wall with a crisp sound, and then bounced up and fell to the ground, gurgling and rolling a few times, just stopping at Zhang Yue's feet, it was a white stone the size of a walnut.

Zhang Yue stretched out his hand and took the white stone into the palm of his hand and observed it carefully.

"This should be the empty crystal, this is indeed a spirit stone, but the aura inside is too complicated, it is not suitable for cultivation at all, how can this kind of thing carry the floating city?"

Zhang Yue studied for a long time and didn't figure out what the function of this white stone was, but he figured out the mechanism of its formation, which was formed by the repulsion and squeezing of the aura in this heaven and earth by the repulsion and squeezing of the yin and underworld qi. The aura in the spar should be as pure as possible, preferably with a single attribute, there are too many types of aura in the white stone, and it is firmly condensed together, which is difficult to decompose and utilize.

Trying to input a true element into the stone, the white stone suddenly gave birth to a force that wanted to fly upwards from Zhang Yue's palm.

"I see, this kind of mixed aura is naturally repelled by the yin and underworld qi, and as long as it is slightly stimulated, it will produce buoyancy. ”

This property is only useful in the Netherworld, no wonder there is no mention of the empty spar in his own information, and there are no outside monks to collect this spar.

This kind of stone has almost no effect on the monks in the outside world, and the cost of decomposing the aura inside is probably more than the aura contained in it, and the gain outweighs the loss. But for the residents of Feicheng, this is the most precious treasure, and the gold will not be exchanged.

"Maybe you can charge some, and if you have a chance to go to Flying City, you can see if you can exchange something. ”

Zhang Yue thought, but except for the small empty spar in his hand, he didn't search for other empty spars.

The Yin Qi explosion had ended, and the rich Yin Qi was gradually absorbed back by the earth rocks, and the range of Zhang Yue's divine sense detection became larger, and there were nearly a hundred empty crystals lying on the ground as far as he could see, ranging in size from fingertips to fists.

"Leave these to Xiao Baifeng and them to collect, there should be more empty crystals in the Netherlands. ”

Zhang Yue's gaze turned to a cave opening, where the Yin Qi erupted just now was the strongest.

Getting up and walking a few steps into the cave, Zhang Yue's expression suddenly moved, and his body brushed the ground and sank into the rock wall.

There was a creeping sound from the depths of the cave, as if something was crawling, and the sound of small stones rolling on the ground.

After a while, a large worm swam out of the hole, with a body like a snake, but without eyes or a nose, and only a large mouth on its skull, and two tentacles that constantly swung into the air.

On the back of the strange insect sat two foundation-building monks, chatting as if no one was around.

"Master is too cautious, every time the yin qi erupts, let me wait to make up the formation, this place is so hidden, where will the enemy be found?"

"There's nothing wrong with being careful. ”

The two monks came down from the back of the worm and repaired the array talismans that had been washed away by the Yin Qi one by one.

After finishing the work, the two did not rush back, and leaned on the long worm and chatted.

"It's so boring, when will I go back to this hellish place? ”

"What, miss your senior sister Helian?"

"Hehe, don't you want those confidantes? This place is really boring to death, it's all day long, I said how many years has this big array been arranged, why hasn't it been completed yet?"

"Who knows, but looking at the master's appearance, it should be almost finished. ”

"I really hope that it will be done sooner, and then Master should not forbid us to have some fun. ”

"What's the fun in this kind of place?" said a tall monk.

Another Humpty Fat Monk winked his eyebrows and said, "Aren't there people who have come to pick up stones?" ”

"It's good-looking, but it's a pity that Master won't let us show any traces. ”

Humpty Dumpty complained, "Master is just too careful, some mortals, can they still threaten us?"

"Master is afraid that they will go out to preach and attract enemies, and in the past few years, the Weaving God Sect and the Seven Color Alliance have sent people in to make trouble, but fortunately, they have not found out here. ”

Humpty Dumpty's eyes purred twice, and he smiled evilly: "I really can't help it, why don't the two of us secretly do it?" Afterwards, disguise that they accidentally entered the body and died, and other people who picked up stones won't care." ”

The tall monk moved, and muttered, "Master?"

"What are you afraid of, even if the master finds out and reprimands, can he punish the two of us for a few mortals?"

"Okay, that's it. ”