The master and apprentice said goodbye to Lingyun Daoist and went back.

From time to time, there was a question in Xiao Xiaohan's heart, that is, in the past, he had only heard that the powerful masters of the cultivation realm could refine pills with the Inner Dan Technique, and he had also heard that the current master Yan Yongfei was once a master of the Inner Dan Technique alchemy, but after all, he had never seen what kind of magical situation it was.

Thinking that he would soon witness it with his own eyes, Xiao Han felt a burst of excitement in his heart.

In the Dao realm, alchemy is divided into two types: outer Dan and inner Dan. Wai Dan alchemy is to build a Danding or Dan furnace in a special site, the quality of Danding is higher than that of Dan furnace, and the construction requires superior materials and more exquisite technical content. Therefore, the pills refined by Danding must be of higher quality than those refined by the Dan furnace, and the high-grade and medium-grade rates of the pills refined by the same materials are much higher.

The choice of the site of the Danding and the Dan furnace is more important, the alchemy itself is an extremely mysterious and strange behavior, and it is not allowed to be watched by people outside the alchemist, the Danding and the Dan furnace must be built in the inaccessible and legendary famous mountain resorts visited by the gods and immortals, and excavated in the deep cave, which is to avoid the invasion of evil qi and the medicine cannot be achieved.

Because it is a place of immortals, there must be earth fire under the Ding furnace, and the earth fire is activated by Taoist secret spells and controlled by Taoist techniques.

Compared to the outer Dan technique, the inner Dan technique refining the pill is weird.

Blame the container needed to refine the elixir and the heated flame.

Take the human body as the furnace, and take the real fire of the dantian as the fire, have you ever seen it?

Let's see how Master Yan Yongfei operates.

The master and apprentice returned to the hut on the riverside dwelling, locked the door and the door behind them, and then covered the windows and doors with curtains.

Master Yan Yongfei's fingers were a little bit, and the darkness immediately shone with auspicious light, as bright as day, Xiao Han knew that this was the kind of illumination array called Yu Qian Liuli.

The master opened the storage bag, first took out the more precious herbs given by Lingyun Dao Chief, and then took out the immortal herb elixirs collected in the past one by one, and it was actually full of cases, which were all priceless rare herbs used for alchemy, and I don't know how many treasures there were in the master's storage bag.

The Taoist storage bag is comparable to a large warehouse, which is large and small. Master Yan carefully selected several herbs, this is a high-level material for refining the Gathering Spirit Pill, which is used for Xiao Xiaohan's disciples to gain the cultivation of true aura, because Xiao Han's recent cultivation has been sparse, and the aura for cultivation to upgrade is relatively weakened, so it is necessary to replenish the spirit element first.

Only when the spiritual element is abundant can the dantian be filled with true qi, and only when the true qi is agitated can the true yuan be operated, the divine consciousness will be strong, the heart will be cleansed, and the muscles and bones will be strengthened.

Several elixirs were selected, and a small jade bottle of prepared catalytic elixir was taken out, placed on the table, and then the other materials were collected.

An antique fist-sized clay bowl appeared on the table, rough on the outside but unusually smooth on the inside, radiating a supernatural glow.

I saw that the master's palm stretched out, and in the silence, I suddenly saw an incandescent flame, slowly rising up, and I could already hear the mysterious incantation exhaled from the master's mouth in my consciousness.

This supernatural flame comes from Master Yan Yongfei's dantian, the true fire of samadhi transformed by the power of true yuan!

The flame in his palm spun and fell into the pottery bowl. The master used gestures to play the trick and control the temperature of the flames.

The same herbs were thrown into the clay bowl, where they were burned and melted in a blazing white flame. Finally, the small bottle of spiritual liquid was put in, and the melted liquid in the pottery bowl began to shrink and condense, releasing a strange medicinal fragrance that shimmered with crystal clear light......