After Xiao Bai and Lin Qingyu walked into the cave, there was a long corridor, illuminated by a strange light, and they were very surprised, because they couldn't find where the source of this light was. Pen "Fun" Pavilion www.biquge.info

As the two of them walked along the road, it felt like they were constantly going upward, but strangely, they didn't feel like they were climbing.

After walking for a long time, a smaller steel gate blocked the way.

It was metal of the same material, and the two still couldn't find any door opening mechanism, so Xiao Bai had to summon Lao Jin again and eat the metal door.

Because he was worried that there was a metal door blocking the way behind, Xiao Bai did not recall Lao Jin again, and the golden giant worm followed the two and flew into the door.

They were greeted by a relatively wide corridor, and the surrounding walls and floors were no longer rocks, but strange black iron.

The golden giant worm vibrated its wings, flew back and forth around the metal wall, and said in surprise: "Lord, this kind of strange black iron has never been seen by my old gold, and it feels harder than the metal that makes up the white iron, and I can't guarantee that I can bite it." ”

The two of them were secretly surprised, it was just that they didn't know one kind of metal, they didn't know both metals, what kind of person could make so many strange metals from the former owner of this lonely mountain.

With curiosity, the two walked along the black iron road for a while, and a neatly arranged steel door appeared on the metal walls on both sides, and the material was the same as the material of the previous steel door.

The neat arrangement of the steel doors on both sides extends to the depths of the road, and there are no less than hundreds.

Xiao Bai let Lao Jin eat a door, and the two of them walked in, and inside the door was a space the size of a house, and a silver cannon more than two meters high was placed inside.

The cannon was several times the size of the Demon Slayer Cannon, and its entire body was silver, but it was not really silver, but some kind of metal similar to silver.

The surface of the giant cannon was carved with strange and bizarre runes, which were completely different from the runes of the human race, and Xiao Bai, who was familiar with the cultivation methods of all races in the world, had never seen this kind of rune.

At the base of the silver cannon, there were twenty grooves, arranged in a circle to form a complete circle.

"Twenty spirit crystals!?" Xiao Bai couldn't help but blurt out.

"Brother Xiao, is there anything wrong with this?" Lin Qingyu couldn't help but ask.

Xiao Bai stared at these grooves with a calm face, nodded and said: "Qingyu, do you know that the spiritual power contained in the spirit crystal is huge, if it is an ordinary metal cannon, it can't even withstand the explosion of a spirit crystal, and it can't be used for firing, you have to engrave various runes on the barrel of the cannon to develop a stronger metal, so that the cannon can be made into a magic weapon that can launch the power of the spirit crystal." The Terrans have gone through a long period of research before they have developed a cannon that can be filled with one spirit crystal, just like in the war seventy-three years ago, the Terran's true martial arts cannon can only be filled with three spirit crystals, and the current demon extermination cannon can only be filled with five. This kind of silver cannon filled with twenty spirit crystals has far exceeded the highest level of the human race today, I think that any race in the world can develop it, plus these runes on the metal and cannon barrels that we don't recognize-"

Lin Qingyu Bingxue was smart, and instantly guessed what Xiao Bai meant, his heart moved, and he blurted out: "Brother Xiao, are you saying that the race of this lonely mountain does not belong to this world at all?"

Xiao Bai nodded calmly and said, "The world is full of wonders. Above the Nine Heavens, at the bottom of the ravine, there are unknown worlds that the human race has not touched, and there are continents in the world that are so vast, and there may be unknown continents that the human race has never touched, and special races that have not been encountered. ”

Xiao Bai secretly thought that this place was already equivalent to a ruin, I don't know how many years it had been abandoned, but it was so much ahead of the most advanced civilization of the human race, what kind of civilization had this mysterious race reached?

And the twenty spirit crystal extermination cannons, its spirit crystal consumption is too much, even if the human race has this level to be able to manufacture, it will not necessarily be manufactured, does this mean that the region where the mysterious race is located, the production of spirit crystals is much higher than that of the Red Dust Continent?

Xiao Bai looked at the silver giant cannon in front of him again, the power of the demon exterminator cannon that could fire five spirit crystals was already very powerful, enough to directly bombard a peak fifth realm powerhouse, this silver giant cannon could fire twenty pieces, its power can be imagined, I am afraid it can bombard and kill a sixth realm powerhouse.

Xiao Bai wanted to take the giant cannon away, but found that the base of the giant cannon was perfectly inlaid with the metal ground of black iron, and it was impossible to directly put it into the Time God Tower.

Xiao Bai was afraid of destroying the giant cannon, so he didn't forcibly destroy the foundation, so he decided to ignore the silver giant cannon for the time being and continue to explore.

The two of them exited the room with the gold-devouring god worm, and let Lao Jin open the opposite room, and the configuration of the two rooms was exactly the same, there was still a silver cannon aimed at the wall opposite the door.

"Wouldn't there be a silver cannon like this in every room?"

Xiao Bai asked Lao Jin to open several rooms in a row, and the result was really the same as he expected.

Xiao Bai was secretly shocked, if such a silver giant cannon was placed on the mainland, it could definitely be said to be the ultimate weapon on the battlefield, where did he think that there would be so many giant cannons here!?And why did they line up in this way?

Xiao Bai felt strange, and suddenly his heart moved, and he ran to a room and carefully investigated the black iron wall where the cannon barrel was pointed.

It was found that the black iron wall was not a single iron plate, but two iron plates spliced together, with a gap in the middle.

Xiao Bai stretched out his hand and groped for the gap, as if it could be separated from it, and suddenly said, "I understand! These two iron plates can already be opened, just like opening a window, so that the silver cannon can fire and attack outside!"

Lin Qingyu said movingly: "There are so many silver cannons here, so should this lonely mountain be like a military fortress?"

"Quite possibly, let's take a look further ahead. The two of them left the room and continued along the metal corridor, and found that there were many rooms on both sides of the corridor, no less than five hundred.

The two of them secretly said to themselves, with so many silver cannons, if they want to capture this lonely mountain when the spirit crystals are sufficient, I am afraid that an army of 100,000 people may not be able to take it.

Xiao Bai secretly said to himself: "The military ability of this mysterious race is so strong, and I don't know how many there are, if the number is similar to the number of the four major clans of human demons and feathers, it is enough to dominate the world." ”

Lin Qingyu said: "It also depends on their cultivation ability, right? ”

Xiao Bai said: "What Qing Yu said is true, but I think their cultivation level is only higher than ours. (To be continued.) )