When Ling Feng returned to the Qitian Demon Lord Mansion, Nu Yi was still practicing constantly. Unlike the playful practice just now, Nu Yi's expression when practicing should be more serious and serious.

Ling Feng could understand the reason for Nu Yi's changes.

Nu Yi's strength has long surpassed that of ordinary cultivators. For him, the promotion below the fourth level is just a formality, so Nu Yi can easily complete the promotion of the previous levels, and his expression can also appear very relaxed.

However, the promotion after the fourth level is different. The fourth level is the highest level of the human practitioner. At the fourth level, the golden elixir that is extremely important for the cultivator must be condensed. At this time, if the slave repeatedly wants to complete the promotion and breakthrough, it will be impossible to be as easy as the previous levels.

Ling Feng has not started to refine the alchemy yet, and all he wants is Nu Yi to come slowly, so the first sentence after entering Qitian Demon Lord's Mansion was to tell Nu Yi: "I don't panic. Uncle, the foundation-building medicine he has refined for you has not been refined yet. You must be calm and come slowly, and wait until Uncle has refined the elixir."

Nu Yi opened his eyes and looked at Ling Feng, then turned into the posture of cultivating the underworld. I don’t know where his current state has reached the promotion.

Ling Feng didn't want to waste time. He took out the Wuji Cauldron from the Qingyun Ring to activate the suspended function of the cauldron ears, and made the cauldron restriction in front of his body. He began to stimulate the thunder fire in his palm and start to warm the furnace.

With the integration of his thunder Yuan, the two ancient words [Wuji] on the Wuji Cauldron faintly revealed a heavy luster, which had never been before. It should be due to Ling Feng's purer power of thunder and fire that stimulated the spirituality of the Wuji Cauldron.

Although it has been a long time since I refined elixirs, the knowledge of alchemy learned from the sakura tree demon and the experience of refining medicines that had been opened in Guanzhen for more than half a year, Ling Feng was still very skilled in refining elixirs.

This time he was going to refine a pill called "Taiwan Guzhu Jindan". This pill is quite violent and is not suitable for ordinary people. However, different from the slave. Ling Feng knew that the slave was extremely wild and his strength was far beyond ordinary fourth-level golden pills. Therefore, this pill cannot be taken by others, but it is very suitable for the "fighting beast" of Nuyi.

The most important medicinal herb is the Youyuan Demon Core given by a casual cultivator named Song Wanling. This demonic core is more demonic. Nu Yi's beast nature just can suppress its demonic nature. It is the most suitable for Nu Yi to eat when he advances.

In addition to the Youyuan Demon Core, there are also rare species such as Green Demon Fruit, Centennial Flower Snake Gallbladder, Spiritual Breeds, Yellow Breasts, Kirin-like bones, and Thousand Years of Arcberg. Among them, Thousand Years of Arcberg is used for medicine.

This thousand-year-old ambergris is not the real ambergris. Real ambergris is not that easy to obtain. Ling Feng got nothing more than a green dragon's dragon's primordial charge. However, the effect of the medicine is close to ambergris, which is actually completely sufficient for pills below level 5 and 6.

The fun of alchemy is endless when competing, but when refining alone, it is actually a boring thing, and you have to endure loneliness.

In this regard, Ling Feng had become accustomed to opening a medicine shop in Guan Town. He was not impatient at the beginning of refining. With the usual heart of an alchemist, he first turned the ambergris into liquid form, and then roasted the medicinal materials slowly with warm fire to make a half-cooked state, waiting for the final intersection of each other.

Because he is refining elixirs for his own people, Ling Feng will not be stingy with the thunder power in his body. Now his thunder power is pure, and he no longer has to drop blood mixed with thunder energy into the medicinal materials like he used to refining the Yinsha Tian Demon Pill. He only needs to use part of the thunder energy as the elixir and integrate it into the elixir as medicine.

After a period of time, a layer of light golden light began to be covered with all the medicinal materials. This was the result of his thunder power attached to it. When the medicinal materials appear to this level, they are already in a very good semi-finished state.

After the semi-finished product, the elixir will begin to melt. Ling Feng will continue to use two types of fire essence this time, one is the green Qingyuan Thunder Fire, and the other is the yellow Xinyuan Thunder Fire.

What is further ahead of the previous alchemy is that when Ling Feng uses these two fire elements, he does not need to rotate and alternately. He can now control the two types of thunder fire with his right hand.

Among them, the thumb and index finger control the Qingyuan Thunder Fire, the ring finger and index finger control the heart edge Thunder Fire, and the middle finger in the middle can just cleverly separate the two different thunder fires.

In this way, the two fire elements of green and yellow began to lift up and circle in his palm like the Tai Chi diagram, circling around him, which was very amazing.

If there is any major competition in this fire-casting technique, it will definitely be a skill that will be amazed by the audience, which will shock most of the viewers.

Because of the proficient use of various refining skills, Ling Feng gradually regained the fun he used to refine pills as an alchemist, and a hint of joy appeared on his face without realizing it.

In that happy mood, Ling Feng poured all the medicinal materials that had been refined into semi-finished products into Wuji Cauldron, ready to use enough firepower to melt the elixir and condense the elixir.

As the medicinal materials poured in, a faint fragrance suddenly floated out of the Wuji Cauldron, but there was no strong fragrance. It was Ling Feng deliberately controlling the overflow of the medicinal fragrance.

As an alchemist with great skills, he not only needs to bake all the medicinal properties in the medicinal materials, but also needs to use his own fire to firmly control the medicinal properties just right, and the most important medicinal properties cannot spill out at all. Ling Feng did a good job in this regard.

And just as Ling Feng poured all the medicinal materials into the cauldron, a ray of light flashed after another on Nu Yi.

Ling Feng couldn't stop looking around, and saw Nu's face full of surprise, and rays of light were floating on his body, sometimes blue and sometimes purple.

Most people who are promoted to the fifth level may only have such a big noise at this moment. At this time, Nu Yi only attacked the fourth level Golden Elixir Realm, and there was such a big noise, which really made Ling Feng feel extremely magical.

Ling Feng suspected that Nu Yi was about to attack the fourth level of Jindan realm, and shouted in panic: "I, hurry up. Uncle hasn't refined the elixir into a finished product yet. Can't you press it first and wait until my uncle refines the elixir to impact your Jindan realm?"
Chapter completed!