Compared with the Seven Realms of Martial Arts, the Dan Fang is also divided into 7 levels, the 1st level Dan Fang is the roughest, and the refining time is relatively short, Pei Yuan Dan is one of them, suitable for cultivators in the Brute Force Realm and the Qi Storage Realm, used to strengthen the body, store qi and nourish the body.

Although it is the most superficial elixir, it can shorten the time of the martial arts realm, as far as the brute force realm is concerned, it takes seven to eight years for the average martial artist to reach it, but if you take Pei Yuan Dan every day, it can shorten the time to one or two years. Therefore, even if it is the most superficial Danfang, if it is known by people in the martial arts, it will also cause a bloody storm.

And this kind of pill called "Hun Tie Dan" is a level 2 pill, which can be taken by cultivators of the Qi Accumulation Realm and the Rigid Power Realm, and there are many kinds of medicinal materials written on it, as many as two hundred, including many rare medicinal materials, and the refining process is similar to Peiyuan Dan, but it takes a whole day to spend a whole day.

After the battle with Chu Li, Fang Ling had been pondering how to break through the Rigid Force Realm, and now he was overjoyed when he accidentally discovered this Hun Tie Dan.

He immediately went out and personally went to the pharmacy in the city to select medicinal materials, and if there were more than a dozen flavors that could not be bought here, he sent people to buy them in the surrounding counties.

It wasn't until the evening that all the medicinal materials were gathered, and Fang Ling came to the kitchen, put the medicine tripod on the stove, and prepared to raise the fire for alchemy.

He was already familiar with the cleaning of medicinal materials, although the names of these medicinal materials were different, but the processing methods and classifications were roughly the same as those of Pei Yuan Dan.

After finishing the medicinal materials, Fang Ling began to refine the pill, and after raising the firewood, looking at the rolling firewood, he suddenly remembered something.

I remember that Xiao Xue once said that there is a difference between inner fire and outer fire in this alchemy, when the cultivation reaches the realm of qi, it can urge the inner fire alchemy, and this internal fire is the qi of heaven and earth that is inhaled into the body.

However, if he cultivated the technique of melting the sun and the moon, and now he can also put the sun fire energy and the moon yin ice energy on the sword in battle, wouldn't that also be equivalent to using the inner fire to refine the pill?

Fang Ling's heart moved, and he immediately prepared to implement this sudden idea, if any Immortal Sect disciple knew that he thought like this, he would definitely laugh out loud, thinking that his idea was arrogant.

You must know that the seven realms of martial arts are divided into brute force realm, qi storage realm, rigid force realm, melting qi realm, xing qi realm, transforming yuan realm and heavenly fusion realm.

As Fang Ling knew, cultivating the art of cultivating the truth would make the cultivator master the energy of the Qi of Heaven and Earth prematurely, which was also one of the reasons why the disciples of the Immortal Sect were able to reach a very high level at a young age, but to truly reach the realm of the release of the Qi of Heaven and Earth, they had to reach the Qi Melting Realm, and to master it proficiently, they had to be in the Qi Realm.

Therefore, for the disciples of the Immortal Sect, this alchemy technique, the internal fire must be in the realm of qi, even if there are people with outstanding talents, it is also in the realm of melting qi, and this realm of qi storage may simply release the inner fire alchemy.

However, the Sun Melting Moon Solution is very different from other cultivation methods, not only can it be used in combat, but it can also be used to treat illnesses.

Therefore, this also made Fang Ling reach the level of releasing the qi of heaven and earth in the Qi Storage Realm, which was enough to advance the Inner Fire Alchemy Pill by two or three realms.