Emperor Qiu took a step sideways and gave half of the furnace table in front of him to Xuan Lao.

"Push the old man out, you're quite good at finding leisure. Xuan Lao scolded with a smile.

Emperor Qiu smiled slightly, and said: "Teacher, your exam questions this time are very ingenious, some of the materials in this are passive 'hands and feet', right? Although it will not be fried because of this, if it is used to refine impurity, or if it is not found at all, if you let those impurities be mixed into the Thousand Forging Exquisite Dragon, I am afraid that there will be big problems in the final solidification stage." ”

"Well, the purification of these materials is not just done step by step, according to the template of the experience of the predecessors, what kind of materials, and even when should be done, understanding these is the foundation of a refiner, holding a series of teaching materials and copying the rigid set, as long as there are some small changes in the middle, you can't react, even if such a refiner is famous, he is also a waste! If that little hand and foot can't be detected, it can only mean that the person's level is not enough!" Looking at the figures of those refiners in the hall, Xuan Lao said with a serious face.

"Well, piling up problems to the last minute erupts also saves these little guys from speculative cancellation, after all, not everything can fail and start over, if you can take it seriously from the beginning, you can save a lot of trouble. ”

Emperor Qiu also nodded when he heard this, how is martial arts not like this, why is the same exercise, the same trick, in the hands of different people.

The reason is that some people really understand the tricks, while others just practice in a standard way.

"Then let's see which little guys can solve the exam questions given by the teacher. ”

Although Emperor Qiu said this, most of his attention was focused on Gu Chensheng.

Here, Gu Chensheng felt the changes in the furnace in front of him, and felt the black stone that was calcining in the middle.

"The structure of this furnace is quite magical, it can actually transform this so-called true qi into a raging flame, and through the blessing of this furnace wall, its power has also undergone earth-shaking changes..."

As the temperature gradually increased, the layer of hard substance on the surface of the black stone also slowly broke open, and a dark red solution flowed out of it, Gu Chensheng's eyes flashed with a touch of difference, and he said in his heart: "Strange, no matter how high the temperature of the flame is, it is also gradually changing from the outside to the inside, but why is this black stone the first to melt inside, and it seems that there is something that is fused with the molten slurry of this black stone." ”

Thinking about it, Gu Chensheng didn't dare to be careless, after all, this was a new thing he had never tried, and it had the scene of the explosion of the Tianji Pavilion furnace the next time.

The caution he had been all the way had made the true qi he injected into the furnace subconsciously become a little smaller, and the raging flame plummeted, and as the temperature weakened, the black stone also solidified again.

"Huh, what do you see Gu Chensheng doing?" Zhong Qing'er looked around boredly, and the only person who could talk to her at this time was Bai Ningshuang.

After her reminder, Xuan Lao and Bai Ningshuang also turned their gazes.

After seeing Gu Chensheng take out the black stone in the furnace, Xuan Lao's eyes suddenly lit up.

"Teacher, this should be one of the tests you set. Emperor Qiu said.

"Black copper mine, the old man added a little B wood in it, of course, more than this piece of ore, there are many ores used for forging, the old man has added a little B wood, the melting point of B wood is not high, as long as you feel the flame, it will be integrated into the black copper molten slurry in a very short time, if the final tempered thousand forging Linglong does not put forward the B wood, then when the thousand forging Linglong is calcined and solidified, the whole Linglong will fail because it cannot be gathered, even if it succeeds is just a fragile bead. ”

Xuan Lao said, and looked at Gu Chensheng with some suspicion.

"This kid can actually find out in such a short period of time..."He didn't say anything to remind, but just quietly watched Gu Chensheng's next move, what if Gu Chensheng just didn't want to refine this black stone...

After all, Xuan Lao is a refining master, of course, he will not judge Gu Chensheng's talent because of a possible action, and even if Gu Chensheng really discovers the problem in the black iron ore, if he does not have the corresponding means to raise Yimu, he is also not a qualified refiner.

What will he do?

Xuan Lao had some expectations.

At this time, most of Gu Chensheng's mind was focused on the black ore in his hand, so he didn't feel the gaze from his side, he turned his wrist, took a piece of animal skin from the side and put it under the black copper ore, and then put the ore on the small round table supporting the furnace.

Immediately, Gu Chensheng was half-squatting, his eyes were level with the black ore, and he observed like this.

This move seemed out of place in the hot refining atmosphere here, and even Xuan Lao couldn't figure out what this little guy's move meant for a while.

Time passed minute by minute, and Gu Chensheng maintained a half-squatting posture and watched for another quarter of an hour.

Finally, just when Xuan Lao thought that he would continue to look at it like this, he suddenly saw Gu Chensheng raise his arm, and his true qi condensed and smashed directly towards the black stone on the table.

Touch!

A hole was smashed directly out of the tabletop.

Gu Chensheng glanced at the innocent wooden table and sighed, after all, with the hardness of wood, he couldn't bear this burden, so he reluctantly wrapped the ore and gently put it in his hand.

Followed by..

Bang bang...

Bang bang bang ...

The muffled sound was incessant, and under this interference, even the refiners who were engrossed in smelting couldn't help but turn their heads to look this way.

Looking at this, I suddenly felt that this kid who vented with materials was a bit of an idiot.

The refiners shook their heads, turned and continued back to their homework.

Cheng Li's brother also showed a hint of ridicule.

Here, Emperor Qiu and Xuan Lao, the two peak powerhouses in a certain field, were also dumbfounded.

"What is this kid doing?" Emperor Qiu was a little dazed, after the refiner entered the room all the way, he looked at Xuan Lao with this kind of scholarly gaze for the first time.

Xuan Lao's cheeks twitched twice, and just as he was about to step forward to scold this stinky boy who disturbed the order, Gu Chensheng's next move made him look at it seriously again.

I saw that in the gap of the animal skin, under Gu Chensheng's continuous smashing, the black stone had been knocked into powder.

The fine gravel in it is innumerable, but in the outer center of it, a few pieces of black-gray powder that are finer than the ore stand out.