It took less than a month to refine the dantian, and it was still perfectly tempered, which was definitely an epoch-making event in the history of the ancient martial arts world.

It's a pity that there is only one person in Lingquan Cave, and Gu Tianzong has a certain psychological preparation for Ling Chen's breakthrough, so Ling Chen has not been able to gain more shock.

The grass egg is that the ancient martial arts realm is full of Dan Palace's minions, and Ling Chen can't go around to publicize it if he breaks through.

Forget it, Brother Chen has improved his strength, and it's not to pretend to be a beep, is Brother Chen such a vain person?

After refining the dantian, the dantian became extremely tough, the capacity became too large, and the strength increased significantly, Ling Chen had to adapt again.

Therefore, for the next few days, Ling Chen was practicing splitting the aura and polishing his control over the power.

A week later, the progress of splitting the aura slowed down, and Ling Chen did not rush to refine the meridians, but began to try to condense the Danhuo.

The so-called Danhuo is to use the true qi of the warrior as fuel, compress it through the dantian, so that the true qi reaches the ignition point, and then release the compressed true qi from the Lao Gong acupoint in the palm of the hand, and when it encounters air, it burns immediately to form a high-temperature flame.

If you simply pursue high temperatures, many modern fuels can reach that temperature, such as the flame of oxygen welding and hydrogen welding, which exceeds the temperature required for alchemy.

So, can the flame of oxygen welding or hydrogen welding be used instead of Danhuo alchemy?

The answer is...... No way.

First of all, the flame produced by the modern fuel is difficult to accurately control the temperature of the Dan Fire as an alchemist can do.

Alchemy is a job that requires extremely high accuracy, and many times, the temperature of the Dan fire is a little higher or lower, and the time to heat up or cool down is a little earlier or later, and the effect of the pill will be greatly reduced, and it is even difficult to say whether it can become a pill.

Secondly, even if the temperature can be controlled exactly and the fuel used is different, the final pill will be very different.

For example, dishes made with a wood fire, a dish made with a coal fire, a dish made with a gas stove, or a dish made with an induction cooker, even if the ingredients are exactly the same, the taste of the dish is very different.

Like some traditional Chinese medicines, it must be boiled with firewood, and even what kind of wood firewood has strict requirements.

The real elixir is to use all kinds of heavenly materials and earth treasures, mix them in proportion according to the Dan formula, and refine the most essence and purest part of the heavenly materials and earth treasures through the incineration and simmering of the Dan fire, so that the medicinal properties of various heavenly materials and earth treasures can penetrate each other and concentrate into Dan.

In this process, all kinds of heavenly and earthly treasures also have to absorb the aura of the flame, so that the medicinal properties can better penetrate each other.

The flame of oxygen welding and hydrogen welding is enough, but is there aura in that flame?

Therefore, no matter how advanced modern technology is, it cannot replace the alchemist in refining the pill.

Condensing Dan Fire is not something that every Dan Jin Realm martial artist can condense, it requires a special alchemist's mental method, and it also depends on talent.

The ordinary heart method of condensing Danhuo is known to most sects in the ancient martial arts world, but the high-level heart method is only available in the Dan Palace.

Ling Chen's mental method of condensing the Dan Fire from the spiritual imprint of the Tai Chi Immortal Weng was undoubtedly the highest level, and it could use the least consumption of True Qi to produce the highest temperature Dan Huo.

Some pills, the refining lasts for a long time, and the fire cannot be broken in the middle of the process, which is not only a great test for the alchemist's spiritual power, but also a test for the alchemist's true qi.

At this time, the advantages of the Condensing Dan Fire Heart Method were revealed.

It's like a car, fuel-efficient, powerful, and long-lasting.

Ling Chen followed the mental method of condensing the Dan Fire inherited by the Tai Chi Immortal Weng, and gave rise to the Dan Fire on his first attempt.

Condensing Danhuo is a necessary quality for becoming an alchemist.

This also has to talk about talent, like some martial artists, they will never be able to cultivate fire-based martial arts, they just don't have the talent in this area.

Of course, it is not enough to just condense the Danhuo, and it is not enough to want to refine the Dan.

Only if you can control the temperature and size of the Dan Fire as you like, you can try alchemy.

Ordinary alchemists, even if they have senior alchemists on their side, will refine countless furnace pills at the beginning, and only when the alchemy experience has accumulated to a certain level can it be possible to produce pills.

For Ling Chen, the existence of the Dark Eye was not only a cheating device for cultivation, but also a cheating device for alchemy.

Others needed countless alchemy attempts to accumulate experience and enhance their perception of the various materials in the Dan Furnace, but Ling Chen's current perception was already extremely powerful, as long as he could skillfully control the Dan Fire, he could start experimenting with alchemy.

However, to reach the level of controlling the Dan Fire as you like, it will take time to practice.

The process of practicing the control of the Danhuo can be used for three years for other alchemists, and seven or eight years for the slow.

However, thanks to Ling Chen's strong spiritual power, coupled with his control over his strength beyond ordinary people, this time should be greatly shortened.

On the tenth day of breaking through the Dan Jin Realm, Ling Chen was ready to start refining the Yang Ji Vein.

Practicing to control the Danhuo is not something that can be completed in three or five days, and it is more important to improve your strength.

After other martial artists broke through the Dan Jin Realm, they tempered each meridian according to their actual situation, and divided the meridians into several sections to temper.

But Ling Chen didn't hesitate and directly began refining the entire Great Vein at the same time.

Next, Ling Chen spent two hours a day practicing manipulating the Danhuo, an hour splitting the aura, and the rest of the time, refining the Yang Ji vein.

Half a month later, Ling Chen's Yang Ji Vein refining was completed.

Before returning to the Ancient Martial Realm, Ling Chen set a time limit of four months for himself, breaking through to the middle stage of Danjin.

Now, there are still more than two months to go, and there are still three meridians to be refined, which is more than enough in terms of time.

After this period of practice, Ling Chen also had more experience and understanding of controlling the Danhuo, and he was still a little hot away from controlling the Danhuo as he wanted, but there was absolutely no problem in refining the low-cost pills of the Tongluo Dan Blood Spirit Pill.

However, Ling Chen was still not in a hurry to try alchemy, and was ready to refine the Yin Qi vein in one go.

The refining of the Yang and Yin veins is completed, even if it breaks through to the peak of the early stage of Danjin.

But before Ling Chen could begin to refine the Yin Sect, someone actually broke into the Transformation Gate.

In the more than a month that Ling Chen and Gu Tianzong had been cultivating in the Lingquan Cave, no one had ever come to the Transformation Sect.

This is normal, even when the Transformation Intention Gate is still there, almost no one will come, and now that the Transformation Intention Gate has completely disappeared from the ancient martial arts world, no one will come.

Breaking through the door of evolution, there are two middle-aged men, visible through the reflection of the lake, a man with a sharp beak and monkey gills, and a roe deer rat, who don't look like good people.

"It's from the Dragon Sect!"

Gu Tianzong stared at the two figures reflected on the rock wall, with an angry expression.

Ling Chen's eyes narrowed, and there was a look of disgust in his eyes.

The so-called Youlong Sect is actually a sect that makes a living from tomb robbing, and it is not just tomb robbing, which sect in the ancient martial arts world has been destroyed, and after a while, there will be disciples of the Youlong Sect to patronize and see if there is anything cheap to pick up.

In short, it was a disgusting sect that clings to the dead to survive.