The so-called single spirit fire rune is the most basic Zhuji Dan fire rune, its temperature is just right, equivalent to three times the purple flame fire rune, on top of the single spirit fire rune, it is a double spirit fire rune, containing two fire spirits, its temperature is six times that of the purple flame fire rune, and so on.

A full hour passed, and Ning Chen used all his strength to finally make the single spirit fire talisman in front of him, and the dense lines on it were like an abstract flame, the most conspicuous of which was a dragon that ran through the entire talisman.

It is full of rich and noble atmosphere.

"Shhhh Ning Chen muttered to himself, touched the sweat on his head again, and then Ning Chen didn't stop for a moment, picked up the single spirit fire talisman on the table, and injected a stream of spiritual energy into it!

Swish!

With the infusion of spiritual energy, looking in front of Ning Chen, a blazing yellow fire ball suddenly formed, extremely bright, like a scorching sun.

If it weren't for Ning Chen's aura to protect his eyes, ordinary mortals would have burned their eyes instantly when they looked at it.

At the same time, with the formation of the blazing yellow fire ball, looking at the walls around Ning Chen, they were already scorched black at a speed visible to the naked eye, and some places were even roasted under the scorching heat of this ultra-high temperature, and waves of heat filled the surroundings.

Ning Chen didn't care about this, he was engrossed, looking at the blazing yellow fire in front of him, there was no joy on his face.

Sure enough, only a stick of incense passed, and then looked at the fire in front of Ning Chen, which slowly became weak, and after a few breaths. Completely extinguished. The purple flame talisman in his hand. Its runes have completely dissipated, and the runes have been depleted.

"Well, that's not going to work. Ning Chen sighed lightly and shook his head slightly, you must know that the Danhuo talisman in the foundation building period must be maintained for at least three hours before it can be considered qualified. It's just a stick of incense, and it has no use at all.

Otherwise, a foundation-building monk who cultivates fire-based spells will be able to maintain a stick of incense for a long time.

"Just now, the temperature of the Blazing Yellow Fire Cluster has almost reached five times the temperature of the Purple Flame Fire Talisman, which can be called the top grade of the Dan Spirit Fire Talisman, but unfortunately it can't last long. Ning Chen frowned, kept rubbing his chin, thinking hard, and felt distressed in his heart.

Only failed this time just now, and Ning Chen lost nearly ten thousand spirit stones. There are so many spirit stones, even if they are great cultivators in the foundation building period. It's also unbearable.

This is also the reason, this is also the reason why the Danhuo talisman is so scarce, no monk can afford to fail many times, with this kind of effort, it is better to make some battle talismans, in exchange for spirit stones.

Standing in the middle of the ground, after thinking for a while, Ning Chen turned around again, sat down at the desk, and began to modify the structure of his talisman.

The focus of the modification is to slightly cool down the Danhuo Talisman, and then make the Danhuo Talisman more stable and able to keep burning for a long time.

After a whole night, Ning Chen finished modifying the Danhuo talisman in front of him, and then continued to try to make and experiment.

Only this time, what made Ning Chen sigh was that although the modified Single Spirit Pill Fire Talisman could last for more than three hours, the temperature was not as high as three times that of the Purple Flame Fire Talisman.

Fail......

"Damn, it's hard. Looking at the modified Danhuo talisman in front of him, Ning Chen muttered to himself, although he was in a bad mood, but Ning Chen still did not give up, recited the heart purification recipe a few times, and calmed his mind, Ning Chen sat at the desk again and began to modify the structure of the Danhuo talisman.

And try to find a way to not only increase the temperature, but also burn for a long time.

In this way, after seven consecutive days, Ning Chen had consumed 100,000 spirit stones, and finally began to get infinitely close to success.

When Ning Chen made the tenth single spirit pill fire talisman, his tightly knit brows finally showed a trace of joy, although he had modified and studied it many times, the moment Ning Chen became a talisman, Ning Chen had a sense, and the talisman in front of him was almost completed.

Then, Ning Chen didn't pause for a moment, and then injected spiritual energy into the single spirit pill fire talisman, and the next moment, the blazing yellow flame rose in front of Ning Chen's body again, and the rolling heat wave continued to scorch everything around him.

Compared with the previous times, the burning of this flame has become quite stable now, and its temperature has reached four times that of the Purple Flame Fire Talisman, which is already equivalent to a medium-grade in the Single Spirit Pill Fire Talisman.

Looking at the single spirit pill fire talisman in front of him constantly burning, without the slightest flicker, the joy on Ning Chen's face has become more serious, through the perception of aura, Ning Chen can already really feel that this Dan fire talisman is enough to burn for four hours!

"It's done!"

Ning Chen finally made such a sound, carefully retracting the Danhuo Talisman, and the whole person was even more ecstatic, and even danced a little.

This is understandable, you must know that once Ning Chen makes a single spirit pill fire talisman, then Ning Chen will undoubtedly become the only monk in the Lingqiu Kingdom who can make a Zhuji Dan fire talisman!

I dare not say that it is a national treasure, but it is almost there!

In this way, Ning Chen's position in the Lingqiu Kingdom will undoubtedly become more important than ever, not to mention the feudal marquis and the prime minister, even if he is crowned the king and given a fief, it is not too much!

With his disdainful efforts in the past, Ning Chen could finally feel that he was no longer far away from regaining the Hou Mansion and regaining everything he had lost.

With this Danhuo talisman, Ning Chen is in Lingqiu Country, and there is no doubt that even if he has an immortal gold medal, even if he is the master of the country, he must not be willing to be unfavorable to Ning Chen.

It's just that now facing Ning Chen, there is another problem, that is, Ning Chen's materials for making Danhuo talismans are not much left.

Other materials are good to say, as long as there are enough spirit stones, they can be bought in Lin'an City, but this phoenix wing grass, because no one has planted it, has been almost extinct, although there are in the mountains, but it is also very difficult to collect, it can be described as extremely difficult to get.

Even if the wind is released now and it is willing to buy it at a high price, if this winged grass wants to become a material, it will take at least three years to become a material.

"How should this be?" Ning Chen muttered to himself, and carefully took out a small cloth bag from the wooden box, which contained the seeds of the winged grass, all the size of beans, ruddy and covered with black spots.

"Forget it, how to get the winged grass and then figure out a way, idle is idle, plant these seeds first. Ning Chen muttered to himself, and then came directly to the backyard of the cabin.

Since Ning Chen's cabin was in an extremely secluded place, in the backyard of the cabin, there was a small piece of wasteland, surrounded by bamboo forests.

Without using any spells, he completely used an iron rake to remove the weeds, and Ning Chen planted all the more than thirty winged grass seeds in the small cloth bag, which can be regarded as a precipitation of the state of mind. (To be continued.) )