"I've found the problem!"

"The aura of heaven and earth here is very strong, and the Immortal Furnace is well repaired, which is very different from the situation when the Qingling was alchemizing!"

"I not only have to control the Danhuo, observe the changes in the Dan fog and Dan liquid, but also control the absorption of spiritual energy by the Immortal Furnace, not too much, not too little, otherwise it will cause the pressure in the furnace to be too large or too small, affecting Cheng Dan!"

"There are a few other factors to be aware of!"

Meng Fan was talking to himself while holding a pen and drawing on the notebook, Qing Ling looked at it beside her, and saw that the notebook was drawing a function curve that she couldn't understand, like a zigzag insect, and couldn't help blinking her eyes in surprise.

"Meng Fan, what are you painting those things for?" Qing Ling couldn't help but ask.

"It's a change value. Meng Fan pointed to a curve equation on the notebook with the tip of his pen and said, "This axis represents the strength of the Danhuo, this axis represents time, and the curves in these two axes symbolize the law of the change of the Danhuo over time. ”

Meng Fan turned his head to look at Qing Ling, who was confused, and continued: "Alchemy is indeed a complicated thing, I thought that two coordinate axes would be enough, after this repeated experiment, I found that I still need to add another axis, in the secular world, these three axes represent the front and back, left and right and height, forming a three-dimensional curve diagram, in my place, I call the third axis the Dan Dao axis, with these three axes, I can perfectly control the changes in alchemy, and achieve success into Dan!"

The corners of Meng Fan's mouth hooked up a confident smile, and he said to Qing Ling, "Do you understand?"

Qing Ling was dumbfounded as if listening to a book from heaven, but nodded stubbornly: "Understand, understand, it's very simple!"

Meng Fan put the notebook aside, checked the herbs, and could refine them twice, took a deep breath, and urged the Dan fire again, refining the Dan, Qing Ling didn't know whether he was stunned by Meng Fan's words, or was infected by Meng Fan's self-confidence, and actually felt that he could really become a Dan this time!

"Bang!"

However, it didn't take long for another puff of black smoke to emerge from the Dan furnace, and Meng Fan failed again.

Qing Ling glanced at Meng Fan, whose face was so smoky that he couldn't look like it, and said in surprise: "Why did you fail again?"

Meng Fan corrected the curve in the notebook again, and said: "There are two reasons, one is that there is an error in a certain value, and the other is me...... It's not enough. ”

"Oh. Qing Ling opened her mouth.

"This time it will definitely be successful!" Meng Fan checked the Qiankun space, took out a Gathering Spirit Pill, swallowed it in his mouth, and after a little pranayama, he began to refine the pill again, this time, Qing Ling was even more nervous than Meng Fan, if Meng Fan failed again this time, it would definitely hit his self-confidence, and it would inevitably affect his future development in the Dan Dao.

"It must be successful!" Qing Ling quietly clenched his little hand, "Everything is difficult at the beginning, if you can succeed this time, the road will be easier in the future!"

Time passes slowly, and the sun sets in the west.

At the Beast Control Gate on the periphery of the Eighteen Mountains, a sturdy man, dressed in a gorgeous brocade robe and with an elder token hanging from his waist, sat in a large hall, squinting outside the gate, the gentle light of the setting moon slowly moved on the ground, and he couldn't help but yawn.

Beside him, squatting sat a white-eyed tiger that had just grown up, with a mighty posture.

When the white tiger looked outside, his eyes showed a fierce light, but when he looked at the man, a trace of jealousy appeared in his eyes, and he meekly rubbed his head against his legs.

In the recent period, it has had countless duels with the man next to him.

At the beginning, it can easily win the other party, but the more difficult it becomes, in the end, it can't win the man once, in its eyes, the man is an out-and-out ruthless man, and its close tactics called "broken mountain iron head collision" make it still palpitating, and when it is hit, the bones are about to fall apart!

"It's so boring!" the man put his leg on the white tiger's head, shaking lazily, "I don't know how the boss is now, why haven't they come yet?

The man grabbed a strange-shaped machete next to him and pointed to the door: "Erfu, go to the mountain gate to see, my friend has not arrived, be sharp!"

The white-eyed white tiger, who was called Erfu by the man, was about to stand up and play outside, when a disciple stood at the door, hugged his fist to the man, and said respectfully: "Elder Liu, the guests of the Tiger Phoenix Palace have arrived, do you want to ......?"

As a result, before the disciple finished speaking, the man ran out wildly.

The white-eyed white tiger shook his body and ran out after him.

A group of people, about a dozen, some men and women, had already walked to the giant beast statue of the beast gate at this time, one of them was a beautiful woman with hair over the shoulder, glanced at the statue, and then glanced at the surrounding environment, and said to a man beside him: "Liu Erxie asked us to bring some strong people who are good at formations, and rush to this beast gate as soon as possible, isn't it that Meng Fan is in trouble here?"

"It's hard to say. A man with a long sword on his back beside the woman said, "The cultivation of the people here is so high, and the earth can be seen everywhere, if you really encounter trouble, it will not be easy to do, and when the time comes, the Elder Liu who sees them, salute first and then soldier!"

"The Zhuge family's formation can be a battle!" said another man with a resolute face, in a calm voice.

"There will be no one left alive after the battle. The woman pursed her lips.

"Hahaha!" At this moment, the man ran over like a gust of wind, glanced eagerly at everyone, and laughed, "Sister Shangguan, Brother Zhu Hong, Brother Zhuge , you are here, I have been really miserable to death in the past few days!"

This group of people was Shangguan Ning, Zhu Hong, Zhuge Lingyun and others who hurried from the Tiger Phoenix Palace.

Zhu Hong glanced behind the man, pulled out the long sword on his back, blocked the man, and said in a deep voice: "Second evil brother, there is a tiger behind you, be careful!"

"Set up a formation!" Zhuge Lingyun took out a flag and waved it at more than ten disciples of the Tiger Phoenix Palace.

Those disciples' eyes suddenly showed a high-spirited battle intent, and the siege was an impermeable circle, and the speed was staggering!

"Haha!" Liu Erxie waved his hand, "Don't be afraid, don't be afraid, this tiger doesn't bite, put it away, put it away!"

"Second evil, are you here to help people raise tigers?" What about Meng Fan?" Shangguan Ning frowned, his face was cold, "Also, why don't you see that Elder Liu? Tiger Phoenix Palace came with the palace master's edict, and if the head of the family didn't come to meet him, why didn't even an elder come?"

"Sister Shangguan. Liu Erxie had a wicked smile like Meng Fan on his face, and patted the head order on his waist, "Liu is not talented, he is the elder of the Beast Control Gate, and the head of this place ...... Haha!

Liu Erxie laughed heartily when he said this.

Everyone looked at each other.

Liu Erxie gasped and continued: "The head of this place is ...... It's Meng Fan!"

Zhu Hong and Zhuge Lingyun let out an "ah" in surprise!

Shangguan Ning, a woman with short hair, who wanted to stay for Meng Fan's long hair, suddenly had a beautiful smile on her face, with a thick sense of relief and endless longing, and was about to ask Liu Erxiao where Meng Fan was, when the bell of the beast gate was suddenly ringing, Niu Maocai took the two elders and all the disciples, and walked from a distance.

"Welcome to the guests of the Tiger and Phoenix Palace!"

"Greetings to Master Meng's friends!"

Before the people arrived, the sound of greeting had already resounded throughout the entire beast control gate.

Shangguan glanced at Liu Erxie and said in a low voice: "It's as bad as your boss, it's worrying!"

Liu Erxie scratched his head and smiled, at this moment, hundreds of people walked in at the mountain gate, shouting the same slogan, led by Su Pei, full of smiles, and Shangguan Ning's gaze was handed over......

Liu Erye said in a low voice: "Boss, the two evils have already invited people over as we originally agreed, and it won't be long before these animals fight very powerful, you are waiting for the good news of the two evils!"

At this time, Meng Fan also encountered something that surprised him......

(End of chapter)