Late at night, ugly.

It's the dead of night.

Lu Xuan urged the method of retreat, drove straight in with a three-inch nail, and came straight to the vicinity of the Tianji Gate.

In front of him was the mountain gate of the Tianji Gate, Lu Xuan did not stop for a moment, and he entered directly under the mountain gate in a grand manner, and the disciples of the Tianji Gate guarding the mountain gate were not aware at all. After continuing to move forward for more than ten miles, Lu Xuan had to stop.

Judging from Ye Li's map, this heavenly machine gate is divided into two parts: inside and outside.

Located in the central area, the area with a radius of more than ten miles is the real core of Tianjimen. And this area is also the most heavily guarded, not only are there many runes hidden on the ground, but even the underground Baizhang is also full of rune light. Not to mention that it is difficult for birds to cross, even earthworms underground do not want to enter.

After all, it is a first-class immortal sect known for refining weapons, and the density of this kind of formation cannot be compared to that of the Lingyun Sect.

However, this still can't stop Lu Xuan, this world's rune array, as long as it is composed of spirit runes, is like nothing in front of Lu Xuan.

Lu Xuan carefully studied it for a moment, dismantled it with the Xuanfu red rope, and quickly gained insight into the mystery of this underground formation.

Quietly opening the formation, Lu Xuanjing drilled towards the hill.

After a while, Lu Xuan finally came to the vicinity of the hill.

Sure enough, under this hill and under the Medicine King Pavilion, there was a large underground formation.

It's just that compared to the underground pill room of the Medicine King Pavilion, the formation under this hill is a hundred times larger. The Tianji Gate almost hollowed out the underground within a radius of five miles, and it was divided into three layers, and the surrounding formations were layered on top of each other, wrapping this underground space as solid as gold.

This should be the underground treasure house of the Tianji Gate.

Lu Xuan's mind turned, and the retreat method pushed away the surrounding soil, revealing a space with a radius of one zhang.

"It's up to you next, there must be someone guarding this underground treasure house, and if I go in, I will be discovered in a moment. However, with your ability, there shouldn't be too much risk, but you also have to be cautious, once you see that the situation is not good, turn around and run, you know?" Lu Xuan said to the three inches.

The three-inch nail nodded, indicating that he understood.

Only then did Lu Xuan take a closer look at the guardian formation of the underground treasure house.

This formation is extremely tight, even with the help of the Xuanfu Red Rope, Lu Xuan has a lot of effort to find the key to it. Not daring to delay time, Lu Xuan first slapped a retreat method on the body of the three-inch nail, and then quietly opened a small gap in the formation.

A breeze swept by, and the three-inch nail had already converged on the demonic qi and turned into the soil, quietly burrowing into the formation.

Lu Xuan immediately sat cross-legged, carried his soul, and used the demon oath method to merge with the three-inch nails.

The soil in front of the meeting was gently tumbling, as if there were ripples at the bottom of the water, and in the blink of an eye, a huge space suddenly appeared in front of me.

It was the first layer of the underground treasure house of the Heavenly Machine Gate.

Although the three-inch nail seems to be a big horn, it is extremely cautious when it comes to the real one. As soon as he entered, he stopped moving, but the thief looked around.

This underground space is extremely vast, and nearly 100 huge "stone walls" are neatly placed in it. On those stone walls, there are grooves like honeycombs, and in each groove there is a talisman, and the light of the Dao runes spreads out, making this underground space colorful and beautiful.

Even if Lu Xuan had been prepared, he couldn't help but secretly speak.

Roughly estimated, there should be twenty or thirty thousand talismans here, Tianjimen also said that talismans are in short supply before, what nonsense.

The three-inch nail is also stupid, how can he have seen so many talismans, seeing so many colorful magic weapons, the three-inch nail can't wait to swallow them into his stomach in one bite. However, as Lu Xuan expected, in this underground treasure house, there was a gray-clothed monk with a deep breath in the south, east, west, and north, although they were all pranayama with their eyes closed, but the true qi was surging out of their bodies, and they were obviously all cultivators in the fusion period.

Although the cultivation of these four people is not too high, if a strong enemy comes to attack, they only need to send out a warning signal, and the entire Tianji Gate will be moved.

The three-inch nail also knew that it was powerful, and without waiting for Lu Xuan's advice, he hibernated.

"What should I do?"

The thought of the three-inch nail sounded in Lu Xuan's mind.

"Go down and take a look, be careful. ”

Lu Xuan admonished, and immediately saw the three-inch nail gently bow his head downward, and immediately there was a black in front of him, but the three-inch nail was drilled directly to the second floor underground by the method of retreat.

The second and first basement floors were almost identical, guarded by four monks, but the grooves above the stone walls were no longer talismans, but countless metal ores. Obviously, this is the raw material of the Tianji Gate refiner, the quantity is extremely large, and there are all kinds of types, it should be Lin Kuo who has spent a hundred years collecting them.

However, these ores are not too attractive to Lu Xuan at the moment, so he ordered the three-inch nail to continue downwards and go to the third floor underground.

The three-inch nail was just about to drill into the ground, and in the corner of his eye, Lu Xuan suddenly found that there was a pile of black ore in the groove of a stone wall not far away.

"Wait!"

The three-inch nail came to an abrupt end, and his heart was full of questions.

"Go look at that pile of black ore. Lu Xuan said.

The three-inch nail crept up to the black ore like a snail, and looked up and down in confusion.

With the gaze of the three-inch nail, Lu Xuan couldn't help but widen his eyes.

Return to the ruins of Xuantie!?

In the refining method of Tianjimen, there is a method of refining, and naturally there is a detailed record of the raw materials of refining. And these black ores in front of the three-inch nails are as black as ink, and they seem to be ordinary, but on the surface of the ore, there is a blue water light passing by, which is clearly the high-grade material of the refining vessel, and it is a dark iron in the ruins.

There is a big gully outside the East China Sea, and there is no bottom under it, and it is called Guiru.

Lu Xuan's Guiru Sword was refined by the Wuyazi Patriarch from the Guiru with endless heavy water, and this Guiru Xuaniron is the product of Guiru.

Although the ruins are unfathomable, this Guiru dark iron is not produced at the bottom of the ruins, so it is not too difficult to collect. But even so, the Xuantie of the Ruins is quite rare in the Immortal Cultivation Realm, and I didn't expect that there were a bunch of them in the underground treasure house of the Heavenly Machine Gate.

Lu Xuan's black rune sword has been crushed by the black water of the six-point ruin sword, and it is not impossible to find another high-grade rune sword, but if you use this ruin sword to refine a sword, it is a match made in heaven.

"Get me a little black ore, not too much, just ten. ”

Lu Xuan nailed to the three inches.

Sancun Nail rolled his eyes, "Didn't you just let me steal something? This is what you want, but it can't be counted on my head." ”

Good, good.

After getting Lu Xuan's response, the three-inch nail opened his small mouth and swallowed more than a dozen pieces of black ore with a poof, and his small body did not even change at all, you must know that this guy can swallow even a boulder as high as two people.

Subsequently, the three-inch nail came to the third underground floor.

The three basement floors are completely different from the upper two.

It seems to have just been opened up, the space is twice as large as the upper two floors, and there is no stone frame inside, but a pile on the left and a pile on the right, which is a little chaotic and full of various things.

Beast bones, demon pills, spirit grass, and skin hair, there was a strong smell of blood.

These things obviously moved not long ago, they should have been purchased from the trading market of Wanxian City, although it is useless for Tianjimen to ask for these things, but they are also genuine immortal cultivation resources. It seems that Venerable Aoba should have started to gradually purchase and stock up on goods, and store resources here at the Tianji Gate, and when their plan succeeds, it is time to take these things with them.

Perhaps because the smell here was so unpleasant, there were only two Tianjimen monks guarding here, and they were all far away, sitting cross-legged in the depths of the corner.

The three-inch nail was a little bolder, and began to wander around, and after a while, came to a huge iron cage.

The cage was full of things, and when he got closer, Lu Xuan couldn't help but snort coldly.

There are countless thousands of mountain coins!

As he expected, Tianjimen had already minted a large number of Qianshan coins, and before they could do it, these Qianshan coins would impact the trading market in large quantities and sweep away most of the resources.

With so many Thousand Mountain Coins, they are worth a fortune before the beast tide comes, but I'm afraid it won't be long before they turn into scrap copper and rotten iron.

Lu Xuan scoffed, and ordered the three-inch nail to continue patrolling.

He always thought about the conversation between Bai Qing's father and son before, the treasure of the Zhenshan Mountain of the Medicine King Valley should be in the Tianji Gate now, but he didn't know what it was, if that thing was not carried by Lin Kuo, it should be very likely to be on the third underground floor.

The three-inch nail patrolled slowly, and suddenly, an inexplicable sense of crisis suddenly rose from the bottom of Lu Xuan's heart.

Lu Xuan knew that it was not the sense of crisis that he perceived, but the perception of the three-inch nail.

Although he knew that the three-inch nail was talented, he didn't know that this guy could slip away under the nose of the Dao Master, and he obviously had his uniqueness. I saw that the three-inch nail suddenly hid in a pile of small mountain-high animal bones, and then secretly looked ahead.

It was another pile of animal bones, and at the top of the bone mountain, there was the remains of a unicorn demon beast.

Tick......

From the tip of the monster's horn, a drop of scarlet blood suddenly dripped down.

How can there be blood among the dry bones?

Lu Xuanzheng was surprised, but saw that the blood fell to the ground, and suddenly turned into a ball of blood, and the blood and gas swirled, and suddenly turned into a little person more than a foot tall.

Looking closely, the little man turned out to be a thin and withered old man, lifelike, with smart eyebrows, except for his height, he was no different from a living person.

Moreover, why does Lu Xuan think that this little old man is a little familiar?

In a trance, it seems that I have seen it somewhere.

Suddenly, a flash of inspiration flashed in Lu Xuan's mind, and he finally remembered where he had seen this old man.

That was before he blocked the Thousand Mountains, and he and Zhizhan had gone to a shop that sold the four treasures of the study.

Lu Xuan wrote a couplet there that broke through Qingfeng's opponent, and Zhizhan also demolished half of the door of the store.

Isn't this old man the owner of the shop?

Lu Xuandeng's eyes widened in surprise.

What's going on?

Could it be that the old man is a strong man who hides deeply?

But the little man in front of the three-inch nail turned into blood is clearly not a living person.

Is it a clone, or is the old man a monster himself?

Lu Xuan was a little puzzled for a while.