Even at night, the departments of Wudao Academy never closed their doors, Su Dong entered the wooden house of the casting department, opened the floor and walked into the basement.

Almost all of Wudao's facilities are built underground, because they are more likely to be affected by the pure spiritual power of the valley underground, which is convenient for students to study and cultivate.

There is no one in the workshop of the casting department, and the eight casting tables are lined up, although they are not as advanced as Su Dong's ice casting rooftops, they are all quite good colors, with excellent texture and simple shape.

Su Dong chose one casually, and then took out the most ordinary piece of steel from the star ring, weighing about a hundred catties.

The Divine Pavilion only has some very simple descriptions of the spirit quenching technique, and there are no details of how to operate it, after all, this technique of smelting metal with spiritual power has been lost for a long time, and there are historians who have seen something similar and written it in the book.

Su Dong pondered it several times in his mind, and said to himself: "No matter how much you think, it's better to do it yourself, it's the so-called practice to bring out the truth." ”

Syllable~

The protective function of the casting table was turned on, and Su Dong began to pour his spiritual power into the piece of steel, only to see that under Su Dong's urging, some white silk threads that were difficult to detect with the naked eye floated out of his palm, this is spiritual power, a very powerful power from nature.

What Su Dong had to do was to pour his spiritual power into the metal in one go, which was like pouring water into a bottle until it was completely filled.

Spiritual power is intangible, fine and tight, it is not difficult to wrap a piece of steel with spiritual power, but it is not easy to completely penetrate spiritual power......

......

In the early morning, the old man got up early, and he would always stand in front of the mysterious temple before the sun rose. When the sun leaped above the horizon, he walked around.

For those students who stay overnight to practice or study without the Dao. The old man would always smile in return and then nod slightly. In his opinion, no matter how good the talent is, it also needs to be matched by hard work, and those students who stay all night to study in Wudao are simply examples of Wudao.

This early morning, Yisuo checked his territory as usual, and when he saw Su Dong's gloomy face, he immediately laughed.

Since he gave Su Dong that piece of pig iron, he often saw Su Dong with a gloomy face, just like someone else owed him money, presumably Su Dong fought with that piece of pig iron for a whole night, and returned in vain.

Su Dong also saw a rope. I took the initiative to say hello to a rope, and then left thoughtfully.

Soon, the old man was transferred to the casting department, and the great foundry master Hai Buwei was also used to getting up early, and was one of the most diligent students under Yisuo, and Yisuo had always admired him.

It's just that Hai Buwei's face is more ugly than Su Dong's, which makes Yisuo feel curious.

"What's going on?" asked Ichisuo curiously, a trace of green smoke could be seen at the door of the casting department, and the smell of something being burned.

Hai Buwei said with a dark face: "Teacher." Go and see for yourself, the studio of the casting department has been completely destroyed by Su Dong!"

"Ruined!?" Stunned, he hurriedly lifted the floor and went into the basement.

Standing in front of the door of the work center of the foundry department, Yisuo's eyes widened. I saw that this place looked like it had just been ransacked!

The looting was not counted, and a fire was set at the end! A foundry was burned black and was emitting green smoke.

"What the hell is going on!?" the old man frowned. Go inside the studio to take a look.

I saw that all the destroyed foundries were the same, as if someone had carved a deep pit with a giant drill bit. Resulting in the complete scrapping of the casting table!

At this time, Hai Buwei also walked in, and asked in a deep voice, "How did this situation happen?"

Hai Buwei shook his head and said, "I've never seen the same example in my life. The caster blesses the blade with spiritual power, I don't understand, what the hell is Su Dong doing with the casting table? These traces are due to spiritual friction, but how did he make such a powerful spiritual friction that can make the casting table completely scrapped!?"

Yisuo pursed his lips, no need to ask, Su Dong must have worked that piece of pig iron, it seems that he still underestimated Su Dong's determination, and if he didn't smelt this piece of pig iron, he would never give up.

"That's it, it's just a few casting tables, come with me to the warehouse and move a few more, and have someone clean up the place. Yisuo said in a deep voice.

Hai Buwei nodded silently, and the two of them walked out, not noticing that there was a very fine layer of metal powder on the ground, as if someone had broken the metal, crumpled it, and sprinkled it on the ground.

......

After asking back, Su Dong was in a much better mood, had breakfast with Hua Yingyue and the others, and drove the Divine Beast Lonely Sky to take a walk outside the academy.

This kid is very magical, he never lets Su Dong accompany him, Su Dong has no time to take care of him, so he runs outside to play by himself, and scatters wildly, unlike other divine beasts, he needs to be led outside by his master every day.

It's just that in this way, Lone Sky has become a scourge in the neighborhood, and the slightly larger animals in the jungle have been eaten by this guy, and recently he has extended his poisonous hand farther away, I really don't know how this guy looks very thin and small, how he eats so much food.

Of course, Gu Tian's favorite is the dim sum made by Su Dong, Su Dong is very busy now, so he has to send him a big bag every few days to let him eat it vigorously.

Stop in the mountains away from the college, where there are waterfalls and springs and a nice view.

Flying is really a magical sport, hovering in the air for half an hour made Su Dong feel refreshed, and Su Dong was even happier to see Gu Tian feasting.

Dao Xing Mountain is where the dragon vein is, and when he leaves the valley, he suddenly lacks that pure spiritual power, Su Dong used his hand to calculate the results of last night's experiment on the sand while watching Gu Tian eat.

"Still thinking about last night?" Phantom Rain asked.

Su Dong nodded and didn't say anything.

Phantom Rain said: "Actually, you are only one step away from success, I was worried that your entire spiritual power would explode, but the result was unexpected, when your entire spiritual power is mixed with metal, it is like a natural barrier, so that the spiritual power is no longer so violent." ”

What Phantom Rain said was the truth, originally Su Dong's spiritual power was easy to explode, but after adding metal, it prevented the collision between spiritual powers. It became unusually stable, and the damage to those foundries was not the cause of the explosion. It was caused by the loss of control of spiritual power in high-speed rotation.

The so-called spiritual quenching technique is to replace the traditional furnace with spiritual power. Ordinary foundries throw metal into a high-temperature furnace to smelt, while Lingquen throws metal into a wildly swirling spiritual power to purify.

So far, Su Dong has done a good job, and it has been proved that Su Dong's entire spiritual power is suitable for performing the spirit quenching technique, but he can't stop when it's time to stop.

Inadvertently, Su Dong discovered a powerful force, that is, the centrifugal force generated by the high-speed rotation of spiritual power, the casting table is an object specially used to control spiritual power, to say that it is strong, I am afraid that there is no stronger existence in the world than the casting table.

But Su Dong's small spiritual power storm made of spiritual power and metal could cut the casting table in half in one go!

What a crazy power!

As a warrior. Su Dong immediately realized the incomparable combat power of the spiritual power storm, and assumed that this power was applied to the enemy, Su Dong believed that even if he was a god of war, he would have to knock off one of his legs!

The high-speed spinning spiritual power is like an appendage, which will stick to the casting table, and it will never stop unless the spiritual power is completely exhausted.

Su Dong is most proud of the fact that he has more spiritual power reserves than others, assuming that he uses so much spiritual power to create a killing storm! Rather, it destroys heaven and earth!

Syllable~

Su Dong clenched his fists, it was very challenging to apply the spiritual power storm in battle, Su Dong couldn't do it yet, and using the spiritual power storm to smelt metal was also a stunt. Su Dong didn't grasp it either, and obviously discovered a rare power that destroyed everything. But it doesn't work, which is a headache.

Stand up silently. Su Dong took out another piece of steel from the star ring and put it in his hand.

"Let's take a break. I haven't slept for two days and two nights, what are you doing so desperately?" Phantom Yu said with some distress.

Su Dong is a madman when he gets serious, he won't sleep at all if he doesn't solve the problem, Phantom Rain is really afraid that Su Dong will go crazy one day because he is too persistent.

"I've been in Wudao for too long, and the purity of spiritual power is much higher than in the past, and now that I've ingested some impure spiritual power, it's just right to test whether the technique of spiritual power storm is suitable for pure spiritual power or messy spiritual power, and I still have to try what changes will occur without a casting table. Su Dong said lightly while preparing.

There has never been a real genius in the world, and the real geniuses are all polished, and the world has only seen Su Dong killing in all directions, formations, martial arts, and casting skills, but few people have noticed how much effort he has put in behind his back.

Syllable~

I saw Su Dong clasp his hands together and use spiritual power to clamp the piece of steel in his hand, and a large amount of spiritual power gushed out, injecting steel little by little, tearing it apart inch by inch!

After a night of grinding, Su Dong's technique has become more and more skillful, and after a few minutes, this spiritual power mixed with metal moved at high speed, tearing a piece of steel into powder!

The next step is to use high-speed centrifugal force, which is the steel to generate the temperature, for smelting!

I saw that the speed of spiritual power was getting faster and faster, and a little spark was constantly flying out, and those were all impurities in the steel, which were thrown out in the high-speed centrifugal movement!

"No, it turns out that the purer the spiritual power, the more difficult it is to perform spiritual quenching! your current state is much better than when you were in the Daoless Dao!" Phantom Yu said with wide eyes.

Su Dong was also very excited, only to see that his hands suddenly exerted force and closed to the middle, and a piece of steel, which was originally the size of a basketball, was compressed to the size of a fist by Su Dong!

The fiery red steel ball is even more dazzling than the sun!

Suddenly, Su Dong's face changed greatly!

"Oh no! it's out of control again!"

The divine beast Gutian was very alert, he was staring at the good-looking fireball in Su Dong's hand, and when he saw that Su Dong's face was wrong, he immediately bit Su Dong's belt, and with a flap of his wings, he was taken into the air with a bang.

Rumble~

At this moment, it was still important to save his life, Su Dong hurriedly put the fireball in his hand towards the ground, and saw a fierce flame rising into the sky, and it was almost half of the mountain!

What a mountain, in the blink of an eye, is flattened, what a terrifying attack power!

Su Dong and Phantom Rain were stunned in the air for a long time, and Phantom Rain stuck out his tongue and said, "Is this Spirit Quenching Technique a casting technique or a martial art? )