At this time, the high platform where the sword furnace is located is no longer flat, but grooves appear. These grooves extend around the sword furnace and to the base of the sword furnace, and continue to extend at the invisible bottom.

Without Tang Banqing's introduction, Lin Tian had already guessed that the function of these grooves was definitely used to guide the melted iron juice in the sword furnace. The iron juice followed these curved grooves and finally gathered in a sword-shaped mold. When the iron juice solidified in the mold, it formed a sword blank.

After thousands of times of forging and then quenching, the main process of sword casting was basically completed. Of course, this is the general process of sword casting that Lin Tian learned from ancient books. As for the differences in the techniques of sword casting masters, he was not clear.

"Lin Tian, ​​come here and stick the fire-suppressing talisman to the south of the sword furnace." Tang Banqing took out a wooden box and signaled Lin Tian to paste the talisman.

Lin Tian had already seen this wooden box. It contained the Zhang family's fire-suppressing talisman. After he opened it, he took out the fire-suppressing talisman, and then carefully calculated the location with the sword furnace as the center, which happened to be the front of the sword furnace.

Lin Tian gently patted the sword stove with the fire-suppressing talisman. As soon as he put it on, the talisman paper suddenly flashed and a fire-red light burst out. In the light, a firebird was vaguely flying, and the feathers on the firebird's body burned with red flames.

Seeing this firebird, a noun flashed through Lin Tian’s mind - Zhuque. Zhuque is one of the four-elephant beasts, located in the south and in charge of flames.

The red light just flashed, and then the entire sword furnace flashed, and the red light flashed. The red light flashed a few times and then disappeared into the furnace body and disappeared.

"The fire-suppressing talisman can condense firepower and protect the sword furnace from being burned. This time, the sword casting is of great significance." Tang Banqing nodded with satisfaction when he saw the fire-suppressing talisman taking effect.

Tang Banqing took another step forward, turned his head to Lin Tian and said, "Okay, now go and open the earth fire passage and heat the sword furnace."

Lin Tian has seen the method of opening the earth fire channel. The last time he checked the deformation stone, Tang Banqing opened it once. He approached the sword furnace, looked carefully, and found the mechanism that was opened.

He reached out and pressed hard, and a few clicks sounded, and then the entire underground space was shocked, and a "rumbling" sound came from the underground, accompanied by the "crack" sound of the mechanism.

The originally stuffy basement gradually increased in the temperature, and the entire underground space became a sauna. However, everyone present was a master, and this temperature would not become an obstacle, and even sweat would not come out.

The vibration and noise gradually became smaller, and at the same time, a red light appeared inside the sword furnace, and the red light became more and more powerful, as if there were flames flowing.

Tang Banqing walked around the sword furnace and even touched the furnace with his hands to sense the temperature. He seemed to feel that it was almost done, so he said to Lin Tian: "Lin Tian, ​​throw the carbon crystal in."

Lin Tian is very familiar with carbon crystals. The fuel used in refining before was carbon crystals. The combustion temperature of the carbon crystals is extremely high, and it is very stable and easy to control. It is the best fuel.

He glanced at the boxes underground and saw shiny black carbon crystals in one of them. The texture was like the top-grade black jade. Lin Tian grabbed a few pieces and threw them in from the mouth of a dragon head.

With the input of carbon crystals, the red light in the sword furnace changed and turned into a faint purple flame. The appearance of the purple flame caused the temperature in the furnace to rise again.

"Add." Tang Banqing shouted again. Lin Tian grabbed a few pieces and threw them in again. After a while, half of a large box of carbon crystals were used, and the flames in the furnace had turned into pure purple, and the temperature was even more terrifyingly high.

Lin Tian noticed that every time the carbon crystal is put into it, the fire-suppressing talisman will quickly flash a red light. Every time it flashes, the temperature in the sword furnace will rise rapidly.

As Tang Banqing said, the fire suppression talisman can condense firepower, earth fire, fire suppression talisman and carbon crystal burning. With the superposition of the three, the temperature in the furnace becomes higher and higher.

"Try the temperature." Tang Banqing said again.

Lin Tian was stunned and puzzled, "How to try?" His first reaction was, would he try it with his own hands? There was no thermometer here.

Tang Banqing glanced at him, then pointed to one of the boxes: "That is an alloy iron ingot, throw it in and take a look."

So that's it. Lin Tian Dawu, it turned out that this was the test method. He picked up a piece of alloy iron ingot, which felt slightly heavy and had a heavy weight. Then he threw it in from a dragon head.

Lin Tian turned on the super perspective and observed the alloy iron ingot. When the iron ingot encountered flames, the outer layer actually melted in the blink of an eye. The entire alloy iron ingot did not last ten seconds before it was declared melting.

The melted iron juice flowed to the bottom of the sword furnace and came out of the groove. Tang Banqing pressed it on the ground, and a groove suddenly changed the way, and the iron juice flowed to another place.

It was a dagger-shaped mold groove, and the red iron juice flowed into the mold, and after cooling, the sword blank was formed.

"Take it out and forge it, feel the strength." Tang Banqing guided again, as if he was teaching his disciples, and was tempted by him.

A famous teacher guided Lin Tian of course worked hard to take out the sword blank with iron pliers and put it in the anvil. At this time, the sword blank was still dark red. He recalled the forging method recorded in the book and started fighting.

The others were interesting to watch, but Ling Shuiyao looked bored. She was watching the birth of the Divine Sword, but who knew it was a live teaching.

Lin Tian's forging speed and strength were incomparable to others. Soon, a dagger with a palm length was formed. Tang Banqing opened a stone slab and there was a clear spring water inside, which was still flowing slowly. There was obviously a cryptana digging underground, but it was unknown where the spring water was attracted.

Understand the understanding, Lin Tian put the dagger into the water, and a sneering sounded, and a stream of water vapor emerged.

"Well, the first time I fought, it's pretty good." Tang Banqing took the dagger, looked at it a few times, and admired it: "It's time to start below."

As soon as he heard that at the beginning, Ling Shuiyao, who was originally listless, was immediately energetic, and Lin Tian also felt nervous. This time, the sword casting would not allow any mistakes, otherwise the rare materials would be wasted, and such top-quality materials might never be found again.

"Ghost Pill breaks the knife and throw it in." Tang Banqing said simply.

Lin Tian picked up the two broken blades of the Ghost Pill and threw them in. The Ghost Pill and the flames came into contact. The decorations on the hilt of the knife were instantly incinerated and disappeared, but the main part did not melt quickly like an iron ingot, but it turned red quickly.

"Put carbon crystal again..."

Lin Tian threw himself in, and the flames suddenly rose, and the dragon heads in the eight directions also sucked in a stream of air, forming eight flame streams in the furnace, and the flames immediately wrapped the ghost balls.

"squeak……"

A strange sound suddenly came from the flame ball, the sound was sharp and harsh, making people's ears numb, and even made people goose bumps. Ling Shuiyao, the weakest among the few people, even took a step back.
Chapter completed!