There is a building complex made of fire bricks around the nearest volcano. The buildings are full of fire veins, and the fire veins are all earth fires that have been burning underground for thousands of years. The temperature of these earth fires that have been tempered by thousands of years in the underground fire veins is extremely high, and they can easily melt gold and break iron. They are the lowest strange fires in the world.

The ground fire that overflows through cracks in the crust rocks has been built into a ground fire pool. It can be rented to the weapon caster or alchemist for refining weapons and alchemists through the seal control of the formation. After all, using their own refining flames or real fire weapons and alchemists to refine alchemists is extremely consuming soul power and true energy.

The Earth Fire Pool is suitable for martial arts professions who need to practice weapon refining or alchemy for a long time.

The Chiyan Luo family also has a ground fire pool here, with three ground fire rooms on the ground fire pool. These three ground fire rooms bring considerable benefits to the Luo family every year, and this benefit is long-term and unfounded. This is one of the reasons why the Liu family is jealous of the Luo family's industry and wants to drive the Luo family out of Chiyan City.

There are only more than ten of this kind of earth fire pool, and each owner is at least a second-rate force in the Ningyuan Realm. The Chiyan Luo family is so lonely that they only have three innate true Qi Realm masters. It is just a third-rate force but has three earth fire rooms in the earth fire pool. How can this not make others jealous?

If you have a treasure mountain, you must also have the ability to protect the treasure mountain, otherwise it will only attract the covetousness of others.

Now Luo Yu is in a special earth fire room with casting tools in the Luo family. The temperature in the earth fire room is extremely high, with a terrifying temperature of more than 60 degrees. If ordinary people without cultivation stay in this place for a while, they will be dehydrated and die. Only warriors dare to stay in this place for a long time.

There is no other furniture in the ground fire room. There is a cushion on the ground and a pool filled with water for quenching. In the middle is a deep round hole the size of a human head. A fiery red light can be seen deep in the ground. There are five short stone pillars around the fire mouth. This is a third-grade fire gathering array. The stone pillars are carved with mysterious array patterns, and there is a notch on which the Yuan stone is activated. As long as the Yuan stone is placed in the formation, it can be activated, thereby attracting the underground fire.

Luo Yu placed a Yuan stone on each of the five stone pillars, and suddenly the light on the stone pillars flowed. The formation was made by it, and a traction force was used on the fire mouth. A red flame rose with a roar of fire. The flame rose more than one meter high, and the temperature in the ground fire room rose by more than ten degrees again.

Luo Yu placed the red copper true fire furnace, the fourth-grade treasure-level melting furnace that Lao Hao gave him in the Qiankun Ring, on the fire mouth. The inscription on the red copper true fire immediately absorbed the burning force in the earth fire and ignited a more pure earth fire in the furnace.

Luo Yu asked the red copper real stove to slowly heat up and preheat the fire outlet, and then placed the large pile of ore materials in the storage bag in the ground fire room. Various ores occupied most of the area of ​​the ground fire room. Then the forging table, hammer, iron pliers, open-finger stone and other objects were also taken out.

After the melting furnace was preheated and heated up, Luo Yu put a five-pound bronze into the melting furnace. This time he still wanted to refine a first-grade bronze sword, the bronze sword of the mortal level weapon. The last time he refines it was under the guidance of Mr. Hao, and this time he wanted to refine it alone.

Put your hands on the red copper true fire stove, and true energy and soul power pour into the true fire stove to control the earth fire to melt bronze.

Although the soul power of a warrior who has not reached the agile realm has not transformed into a spiritual consciousness and can be released from the air, the soul power is stronger than that of ordinary warriors, but the spirit power is stronger than that of ordinary warriors, can use soul power to sense and control flames at close range. This is one of the reasons why artifact power and alchemists have high requirements for soul power.

Due to experience in the last refining experience, Luo Yu knew the melting point temperature of bronze, and controlled the temperature of the flame to reach the melting point temperature of bronze. The bronze quickly melted into bronze iron, and then controlled the flame to purify the melted bronze in a constant temperature state to remove impurities.

After a moment, one-third of the weak bronze iron was suspended in the red copper true fire furnace. Luo Yu slowly lowered the temperature. At the same time, he used his soul power to pull the melted bronze into a rectangular sword shape, slowly extinguishing the fire, and the bronze also condensed into a red long sword shape.

The bronze wrapped in the true energy was taken out, and Luo Yu clamped the red bronze with iron pliers and placed it on the forging table to forge continuously. The sound of the hammer hit the ground fire room. After continuous beating, the bronze was also beaten into a sword embryo. The sword embryo of the sword embryo was thinned out, and the sword embryo of a bronze sword was completed.

Then Luo Yu put the bronze sword embryo in the red copper true fire and returned to the furnace to heat it. The sword embryo was burned red and reached the quenching temperature. Then it was taken out and placed in the quenching pool aside.

White smoke rose up, the bronze sword embryo was quickly cooled down and quenched, and the hardness of the sword also reached a very hard level.

The rest is to use the open-sharp stone to sharpen the sword tip, and at this point, a first-grade bronze sword was successfully cast.

Luo Yu held the bronze sword and bounced it with his fingers. The sword body made a crisp sound. Luo Yu nodded with satisfaction when he heard his voice. It took two hours to refine the bronze sword.

The bronze cost of a bronze sword is only a few hundred taels of silver, and a successfully refined first-grade bronze sword can buy ten lower-grade Yuan stones at a high price. This shows the huge profits of the artifact casting masters. Even if they are just first-grade artifact casting masters, they can live a wealthy life all their lives by relying on artifact casting.

The weapons of the first-grade mortal level are ten yuan stones, the second-grade mortal level is thirty yuan stones, and the third-grade mortal level can be sold at a high price of 100 yuan. Once the weapons of the fourth-grade treasure level are refined, the price will immediately increase by ten times, and you can buy a high price of 1,000 yuan stones.

Luo Yu put the bronze sword aside and placed a harder black iron ore in the red copper real stove. This time he was going to refine the black iron arrow for himself to use.

The Black Iron Arrow is also a first-grade mortal weapon, but because of its small size, it is more difficult to refine than a bronze sword.

As expected, because of the first time to refine black iron, Luo Yu was not familiar with its melting temperature, so the first piece of black iron ore was scrapped by Luo Yu because of its high temperature rise.

Luo Yu frowned, and then controlled the red copper real stove. The scrapped slag was discharged through the special slag discharge port below the melting furnace. Another piece of black iron ore was placed. This time, Luo Yu learned to be smart and did not heat up quickly, but added the temperature bit by bit to find the melting temperature of black iron.

It is extremely time-consuming to find melting points slowly in this way. The casting master is a process of accumulating experience. With more ores melting, he will understand the melting points of various ores and refining them quickly, just like Luo Yu refining a bronze sword. Because he has refined it, the second refining will be very fast.

In fact, the melting temperature of various materials is recorded in Lao Hao's weapon refining notes, but Luo Yu doesn't want to rely on the weapon refining notes on everything. He wants to explore it himself, and only then he will read Lao Hao's weapon refining notes when encountering problems that cannot be solved. In this way, the weapon refining technique can be truly improved.

Just like when we do exam questions, we can tell you the answers directly, and if you don’t analyze the problem-solving ideas yourself, your grades will not be improved.

This time, Luo Yu spent an hour just looking for the melting point, and he ruined five pieces of black iron ore. It was not until the sixth time that he actually found the melting point of the black iron ore.
Chapter completed!