"I didn't expect that there is a passage in this pile of rocks, if it were an ordinary player, I would definitely regard the place where the Demon Boar King was refreshed as the end of the boar mine, and I would never come to this pile of rocks." Tian Crazy glanced at it, this cave is more than two meters high, and it is quite spacious if one person enters and exits, and two people are a little crowded.

The place was too narrow, and Xiao Ling and the others could only enter this tunnel one after another.

The cave is a bit dark and damp, and there is a lot of water seeping out of the cracks in the rock wall. A faint and warm white light lit up, and I saw that the staff in the hand of the Heavenly Maniac emitted a soft white light, illuminating the entire tunnel.

Under the illumination of white light, when Xiao Ling saw the reflection of white, gold or blue on the rock wall, he was stunned, could it be that this rock wall is full of ore? Based on the luminance and chromaticity analysis of these reflected lights, and referring to the description of ores in the Mechanical Alchemist Study, these ores are supposed to be associated with Mithril, Blue Gold, and Black Gold.

"These stones are supposed to be ore, right?" Tianxin leaned over a stone on the rock wall and looked at it carefully.

"Yes, this should be an associated mine." Xiao Ling replied.

Hearing Xiao Ling's answer, Tianmad was also a little curious: "Associated mine? What ores are produced here? ”

"My guess is that there should be mythril, blue gold, and black gold, and I'm not sure if there are any other metals." Xiao Ling's answer made Tian Mad and Lin Fei gasp, Needless to say, Mithril is a rare first-order metal, each piece of Mithril metal ore can be sold for about five or six gold coins, as for blue gold, rare second-order metals, it rarely appears on the market, and the price of each piece of blue gold metal ore is as high as thirty gold coins, as for black gold, rare third-order metals, only NPCs have sales, and NPCs sell them at a price of one hundred gold coins.

"What a valuable rare mine!" Tianfei couldn't help but say, this stone wall is simply plastered with gold coins.

Xiao Ling planned that if time was free in the future, he would be able to make a lot of money by mining here, but if he wanted to enter this tunnel, he had to pass through the area where the Demon Boar King was located, and if he wanted to come here in the future, he had to kill the Demon Boar King first, which was also a very depressing problem.

The group walked into the distance, and Tianmad couldn't help asking, "Do you want to dig some ore before leaving?" ”

Xiao Ling shook her head: "Don't be in a hurry, let's talk about it later." "Xiao Ling has his own plans, the demon eyes of the Demon Boar King, Xiao Ling is bound to win, and he will come again in the future, and it is okay to mine here when the time comes, and this place is so hidden, there is no need to worry about being discovered by other players.

Tianmad nodded, and the group walked towards the end of the tunnel, walking in the narrow tunnel for half an hour, and finally saw the end of the tunnel. On the stone wall next to it, there is a black and heavy iron gate, which is very old, and the iron gate is mottled with rust everywhere.

Lin Fei looked at the map and said, "It should be here." ”

Tian madly pushed the iron door, but the iron door did not move, and I didn't know how thick the iron door was. "How do I open it? Is the method of opening written on the map? ”

Lin Fei looked at the map carefully, shook his head and said, "No." ”

Xiao Ling removed some rust on the door, and there was a place on the edge of the iron door that was not rusty, but a circular pattern was depicted, and inside the circular pattern were some regular geometric figures.

It's a magic circle! It's just that Xiao Ling hasn't studied anything like a magic array, and he doesn't know what this magic array represents. Xiao Ling said to Lin Fei: "Bring me the map." ”

Lin Fei handed the map to Xiao Han, looked at the graphics on the iron door and said, "This pattern should be a magic array, right?" It seems that we need to learn some related knowledge such as magic arrays and runes, otherwise we will encounter these things when we encounter them in the future, and we will not know anything about them, and it will be troublesome to learn them again when the time comes. ”

Lin Fei's words caused the heavenly madness to think, the six technologies of magic array, runes, refining arrays, totems, coats of arms, and spirit patterns have almost run through the history of the Enzes Continent, and have derived the entire scientific and technological civilization of the Enzes Continent.

Xiao Ling was the same, originally thought that as long as he learned the runes and refining arrays well, there would be no problems for engineering manufacturing, but now he found that although all the technologies have their own development history, they have also penetrated into each other, and it is not enough to learn one or two of them.

Xiao Ling compared the graphics of the magic array on the map with the graphics on the iron gate, Xiao Ling did not understand the magic array, and could only apply some principles of runes, in fact, runes and magic arrays have developed to this day, and many principles are common. Although he only knew a little about it, Xiao Ling found that the magic array graphics on the map and the magic array graphics on the iron gate were in some places consistent with each other, could it be a pair of mutually solved magic arrays?

Thinking of this, Xiao Ling took out a carving knife and compared it on the magic array on the iron gate, and then began to carve the magic array on the map into the magic array on the iron gate according to the proportion.

The Heavenly Maniac and the others all watched Xiao Ling's movements with wide eyes, full of curiosity, for them, magic arrays, runes and the like were quite mysterious, and it was extremely difficult for people who had not studied the technology of the Enzes Continent to understand.

Xiao Ling carved as she became more and more confident in her thoughts, because these two figures were completely compatible, and they fit perfectly, and it seemed that this figure was the key to opening the iron door.

When Xiao Ling carved the last line, a light blue light instantly filled the entire magic array along the lines of these magic arrays, and the magic array emitted a brilliant blue brilliance, dazzling.

Immediately after, the iron door creaked and slowly opened inward.

Xiao Ling and Tianmad were overjoyed, they didn't expect this magic array to be used as a lock, Tianfei and Tianxin were amazed, and suddenly they had some interest in the magic array, and these little things seemed to be very interesting.

"I'll go in first." Lin Fei said, sneaking into the room, and after a while, Lin Fei's voice came: "Come in." There seemed to be a bit of disappointment in his tone.

Xiao Ling and Tianmad walked into the room, and the staff of Redra in Tianmad's hand illuminated the entire room. This is a small stone room, only a stone bed, a stone table and a few stone benches, extremely simple, a few pieces of clothing were thrown on the stone bed, Lin Fei touched those clothes, and these clothes instantly turned into ashes.

"I said this bad old man, there's no way he's going to leave us anything good." Tianxin said a little depressed.

They searched and found nothing.

"Look, what is this?" Lin Fei asked suspiciously, Xiao Ling and the others looked at Lin Fei, only to see that she was holding a silver-white metal ball in her hand, the surface was very smooth, there was no crack, and there were some weird symbols engraved on it, and I didn't know what it was.

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