Liu Feng nodded without saying anything. He wanted to persist in refining the Infinite Cold Iron until it melted, and he also wanted to cultivate himself during the smelting process.
Taking the flame from Jiehun's hand, Liu Feng once again burned the Heavenly Flame Furnace.
This time, Liu Feng secretly vowed in his heart that he must burn for more than ten days, but these ten days would definitely be a torment.
The red flame burned more vigorously under the stimulation of Liu Feng's inner strength. Jiehun said that only by burning with smelting fire can the Tianyan Furnace transfer heat. However, he did not say that the Tianyan Furnace needs the smelting fire of a heavenly-level refiner to melt.
One day, two days, ten days passed, and Liu Feng's hands began to tremble again. This time, white smoke was coming out of the Tianyan Furnace. Yes, the water vapor on the Infinite Cold Iron had begun to evaporate. Liu Feng was a little excited, even a little agitated. Perhaps after the water vapor on the Infinite Cold Iron evaporated completely, the Infinite Cold Iron would really begin to burn, and the melting of the Infinite Cold Iron would not be far away.
However, just when Liu Feng was excited, his hand suddenly trembled, and the swaying red flame was extinguished silently.
"Alas!" Liu Feng could only sigh helplessly. After all, his internal strength was limited. Although it had improved a lot during this period of practice, he could only last for ten days.
"Infinite Cold Iron, Infinite Cold Iron, when will you be willing to melt?" Liu Feng shook his head. However, every time he persisted, both his innate spiritual energy and internal strength would be improved, so that Liu Feng has always been enthusiastic about refining cold iron.
Liu Feng once again took over the furnace fire from Jie Hun's hand. This time, the originally blue flame turned orange-yellow when it came into Liu Feng's hand. Looking at the orange-yellow flame, Liu Feng shouted excitedly: "Old man, has my inner strength been upgraded to a higher level? Look, the color of the flame has changed!"
Jiehun said calmly: "It's just orange-yellow, not even yellow. Now as long as you have a martial spirit, you can become a late-stage human-level weapon refiner."
Like weapon refiners, pharmacists and hidden weapon masters, there are five levels: human, earth, heaven, emperor and supreme. Each level has three stages. After possessing the martial spirit, Liu Feng can ignite the smelting fire by himself. The orange-yellow flame is the symbol of a late human-level weapon refiner.
Liu Feng smiled and said, "I found that I will soon be able to possess a martial spirit. I use my inner strength to practice martial arts, which is actually very beneficial to my innate spiritual energy. This is really amazing!"
"Isn't this all thanks to me using the Blood-Evolving Pill to reorganize your blood?" Jiehun aroused his smelting fire and said, "Keep going? For your martial spirit!"
***
After several attempts of persistence, Liu Feng finally held out for a whole month. This was the longest time Liu Feng had ever persisted. This should be a breakthrough. Liu Feng, who fell to the ground, took a long breath and touched the temperature of the Tianyan Refining Furnace, but it was still warm, without any improvement. The water vapor in the Infinite Cold Iron had long been evaporated.
Liu Feng shouted weakly: "Old man, are you kidding me? Why is there no improvement after burning the Sky Flame Refining Furnace for a month?"
"Playing tricks on you?" Jiehun was laughing secretly, "Do you know now that I am playing tricks on you?"
(End of this chapter)