Near Qingtan in Crescent Mountain, the two broke a boulder because of their discussion, but they didn't expect that there was a cave entrance under this boulder, leading straight to the dark bottom, the two of them took their hands when they were interested, and drilled into it to find out, this cave is plain and not very deep, and the end point is under Qingtan,

When they came to the bottom, a small dark light came into view, it was a magma pit about two or three meters or so, and around the magma pit, it was all condensed obsidian, and just below their feet, a cave that originally belonged to magma solidified into obsidian.

"Alas, I thought there would be some major discoveries, but I didn't expect it to be just a hole," Qing Chengyu walked into the magma pit, squatted down to check for a moment, sighed and said, but noticed that Yu Lingfeng was carefully observing the ground, and couldn't help but feel curious,

"These black stones under our feet are all obsidian?" Yu Lingfeng looked at himself,

Qing Chengyu was puzzled: "But what's the use of this bulky and black stone?"

"yes... What's the use?" Yu Lingfeng thought hard, and suddenly thought of the void system, so he manipulated the system to search for information about obsidian, but this time it was a strange look,

Obsidian can be used to build nether gates, which is an in-game setting, but it also exists in the system, does this mean that he can use this obsidian to create a nether gate?

Shaking his head, Yu Lingfeng once again focused on the other options, and suddenly he noticed a small black ball glowing with black light, the surface looked like six black rings wrapped around a black and shiny spar, and in the center of the black spar, there was a little white light surrounding it, like the core of some kind of substance,

Click in and take a look, only to find that this is just a synthesis table, it requires eight obsidian crystals and a superb white spirit stone core, and then looking at the crystal synthesis conditions, it takes ninety obsidian to synthesize an obsidian crystal...

"Obsidian Orb: Make a 5x5 obsidian wall generate directly in front of you, and you can destroy it by using the orb to face the wall again, and a spirit stone core can generate an obsidian wall fifty times, with two hundred durability points, which can be charged," Yu Lingfeng silently kept this orb in his heart, and Qing Chengyu saw that he was looking at obsidian for a long time, and he didn't want to disturb anything, for fear of affecting the other party's train of thought.

"How do you get this obsidian down?" Yu Lingfeng came back to his senses and looked at Qing Chengyu, who shook his head and smiled bitterly: "Aren't you kidding, this large piece of obsidian under our feet, even if the foundation building monk blows with all his strength, it may not be able to break it, and this thing is heavy, but it is a very good refining material..."

Speaking of this, Qing Chengyu seemed to understand Yu Lingfeng's thoughts, but this made him even more puzzled, but the former suddenly smiled, turned around, and a dazzling white diamond pickaxe appeared in the palm of his hand.

Yu Lingfeng grabbed the somewhat heavy diamond pickaxe with both hands, accumulated true qi in both hands, raised it above his head and dug it down fiercely, only to hear the crisp sound of 'ding' coming into his ears, the obsidian under his feet did not move at all, not even a trace was left, Qing Chengyu was stunned, only to see a diamond pickaxe thrown in front of him,

Yu Lingfeng's hands trembled slightly, and he looked at him: "This thing is difficult to dig, come with me, just dig a piece,"

At the beginning, he also observed in the process of transforming rubble, probably because the value of obsidian is too low, and the gravel will not be converted into obsidian.

And at this moment, both of them were already sweating profusely, Yu Lingfeng was really unbelievable, this obsidian was so difficult to dig up this, and there were no bits and pieces nearby to pick up, the two of them were sweating profusely, and part of their true qi was consumed, but only one mark was dug up,

Yu Lingfeng didn't believe in evil, he got up and dug it up again, Qing Chengyu did the same, the two of them dug together for more than ten times, and finally cracked out a large piece of obsidian, and the panting Yu Lingfeng finally picked up, and took out a large piece of heavy obsidian, and with a wave of his hand, it was stored in the transformation table, and it was only worth 10 energy values at a glance, and it was no wonder that the gravel could not be converted.

"The conversion system has automatically recognized the item's attributes, does it use energy values to complete it?"

Just as he was silent, a line of slogans appeared in front of him, accompanied by a cold voice in his head,

"Of course, it's best to complete," Yu Lingfeng agreed without thinking about it, as soon as the words came out, the obsidian in the transformation table quickly expanded, forming a square and black obsidian, Yu Lingfeng smiled helplessly, and sure enough, the black stone was as he thought, and after being repaired by the system, it became a cube.

After the completion of the obsidian has become a piece of 50 energy value, and ten obsidian crystals need nine white pieces of obsidian, including the best white spirit stone, it is less than 100,000 energy value, but I believe that all this is worth it, he must make one obsidian orb, and he has to prepare a second one for Qing Chengyu!

Yu Lingfeng took advantage of the situation to open the void operation table, and separated the energy value from the transformation table into obsidian, the process did not last long, when the first obsidian crystal was synthesized, and then reproduced through the transformation table, so that there was no need to repeatedly operate to synthesize the crystal, and the energy value of more than 100,000 was extracted at once, forming sixteen black crystals emitting black light.

Sixteen obsidian crystals were placed in a circle of the void console, and finally Yu Lingfeng put two pieces of superb white spirit stones in the center, and suddenly the light was great, and an obsidian orb came out, Qing Chengyu only saw Yu Lingfeng in a repeated daze, his eyes changed and he didn't know what he was thinking, and he thought that something was wrong with him, and he didn't dare to ask, but when he reacted, he had already grabbed two things in his hands,

Yu Lingfeng wiped his sweat, his heart was full of a sense of achievement, he grabbed the obsidian orb in the palm of his hand, walked in front of the other party and turned around, and suddenly formed a high wall made of obsidian in front of Qing Chengyu, who was full of doubts...

"This.... What kind of magic weapon?" Qing Chengyu was dumbfounded, rubbed it hard, and reached out to touch it, this is indeed obsidian, but at this moment, this small underground cave has blocked a small half of the place,

"Oh, it's yours," Yu Lingfeng shook his hand and threw out the obsidian orb in his right hand, Qing Chengyu subconsciously took it, looking at the magical bead like a treasure.

"Now that the offense and defense are ready, it's perfect, let's go, it's time to go back, you come out and block the road by the way." Yu Lingfeng turned his head and beckoned and walked up.

Shu Ri early in the morning, he stood at the top of the mountain after getting up early, took a careful look at the Crescent Mountain, and noticed that Qing Chengyu had also gotten up early, and those guys were still sleeping like dead pigs, today is destined to be a different day, because there will be people from the inner gate who will be demoted to Yaoshan, and the people of Yaoshan will have two disciples who meet the strength standards to stand out, there is no doubt that these two places belong to them.

The two of them went down the mountain together, towards the center of the four major medicine districts, and at the same time the people from other mountains also went down the mountain one after another, and quickly rushed to the final point of the center of the medicine area, the light of the morning reflected down, revealing a trace of scorching, the flow of people gathered more and more, bustling and discussing, looking at Yu Lingfeng and the two of them coming, some people recognized his identity with a light in their eyes, and more people indirectly ignored his existence.

On the contrary, the names of the other six people who assessed and advanced to the finals were passed on by word of mouth among these people, and even secretly bet on them, but there were not many people involved, because the bet was not about who won or lost, but on which two of the eight people were the predetermined candidates, such a bet had no rules and fairness, so few people would bet at all.

"Look, Wei Jiazhi is here! and he's not alone,"

"Is today's dark horse finally on the field? I'm already a little impatient to collect the money..."

"You think beautifully, do you see the two people over there, the big man from my East Medicine District, even Chun Beiye has to respect him for three points, today's dark horse belongs to them!"

"Hmph, last time it was the promotion of the East Medicine District, if it's still them this time, I'll perform a handstand in public and eat shi,"

"Okay, I'll bet on twenty white spirit stones, and if you lose at that time, you'll either give me a handstand or pay for it!"

"Yo, what are you betting on? Why don't you bet too....?"

In such a noisy atmosphere, Wei Jiazhi and the other five people walked together, one by one, calmly and leisurely, Yu Lingfeng frowned, these people really did not plan to go on stage,

Back to the promotion ring area, there was an examiner sitting next to each ring, his disdainful eyes glanced around, and he looked like he was superior.

"I, Wei Jiazhi, announced my withdrawal from the competition, please ask the examiner for permission~" Today, the four major medicine areas are on holiday for a day, and a group of people are waiting to watch the scene of the duel competition and promotion, and the four finals in the center of the four major medicine areas are originally used for duel promotion to eight promotions and four promotions, and eight candidates who passed the assessment and promotion, led by Wei Jiazhi, but six people at the same time put forward a withdrawal request to the young examiner who came down from the inner door, which made everyone feel inexplicable.

"Isn't it? Withdrawn? Didn't it all fake fights in the past? Why did it suddenly turn into a retirement this time?"

"Isn't it, this game is inexplicably retreated, don't they even bother to fake a fight?"

"It is said that it was because the two soft eggs in the Nadong Medicine District who advanced provoked Wei Jiazhi and others, so they joined forces to do things and withdrew from the competition in one fell swoop,"

"You fart, you! Obviously, they were asked to withdraw from the game by the other party, and they were reluctant, so it can be seen that those two are not soft eggs,"

As the six people applied for withdrawal from the competition, the uproar broke out, and even the four young examiners were depressed, and almost at the same time, everyone, including the examiners, looked at the two only people who did not apply for withdrawal.

"What about the two of you, are you going to quit the competition?" said the young examiner in the first ring indifferently,

"No return. Yu Lingfeng replied neatly, and Qing Chengyu also said these two words,