Following A Jing down into the crevice, Chen Guanshui felt for a moment as if he had mistakenly entered the Huoyuan Cave in Shu Mountain.

Red-hot magma and fire energy were everywhere, flowing along the air in the narrow space, sometimes penetrating in and sometimes rushing out, like the majestic breathing of the earth's lungs.

"This is a natural lung of the earth." Kunlun Mirror introduced, "Well, it may not be that natural, but the scale is almost the same as a natural one."

"The classics say that the collapse of the southeast pillar was due to a fight between the water god Gonggong and the fire god Zhurong. The former was defeated and crashed into the pillar, knocking it down."

“But judging from the existence of this Earth Lung Fire Vein, it is more likely that Zhu Rong cast some vast spell that affected the Heavenly Pillar when he killed Gong Gong, isn’t it?”

"Indeed." Chen Guanshui nodded and said, "The great witches of that era did have magical powers far exceeding those of modern immortals."

"But reaching the limit of lifespan in this world is also one of the reasons." Kunlun Mirror sighed and said, "The place where the pillar of heaven and the dome of heaven are connected should not be so fragile."

"In short, the pillars of heaven collapsed and the sky was broken, so Nuwa had to refine the stone to repair the sky. What we have to do is to repeat what happened in the past."

"That's right." Chen Guanshui agreed absentmindedly, thinking about what excuse he could use to get Ajing to cast a magic shield on him.

"Oh, right." Kunlun Jing suddenly said, "I have restored your illusion. Now you don't have to worry about someone finding you through magic."

"That's great." Chen Guanshui said seriously, "Since no one will disturb me, I can't wait to start refining the Heaven-Repairing Stone... Where are the fragments?"

"It's just ahead." Kunlun Mirror led Chen Guanshui through the hot wind and finally came to a cave.

Below the cave was thick, molten lava. The heat was so intense that even the light was completely distorted by the heat flow.

Six fragments of the Heaven-Repairing Stone, wrapped in mysterious and obscure runes, were spinning at an intermittent speed a few inches above the lava.

"That's it?" Chen Guanshui asked in astonishment. "Instead of immersing directly in the underground fire, you rely on the heat flow from above to heat up? How long will it take to heat up?"

"The temperature of the underground fire is too high." Kunlun Mirror sighed and said, "If you put it above the underground fire, at least you can take it back at any time."

"If it is immersed in the underground fire, what if it sinks?"

"Can't you just tie yourself with a rope and soak yourself in it?" Chen Guanshui had a wild idea.

"What kind of rope can withstand the high temperature of the underground fire?" Kunlun Jing asked with a smile.

As the saying goes, "thunder in the sky and fire on the earth", since this earth fire is as famous as thunder, its power is of course needless to say.

Chen Guanshui couldn't answer and said:

"I believe you, Jing, will find a way."

"I really have no way." Kunlun Jing shook his head. "My specialties are in numerology, illusion and space. I really have no idea how to deal with this kind of underground fire."

"Guan Shui, do you have any good ideas?"

"Can we use some risky methods?" Chen Guanshui asked seriously, "For example, there may be risks..."

"No." Kunlun Jing said with a smile, "Even if something happens to both of us, we can't let the fragments of the Bu Tian Stone be lost."

Chen Guanshui: ...

He thought about it carefully.

The problem that the Kunlun Mirror is facing now is somewhat similar to nuclear fusion - in order to melt and fuse the fragments of the Bu Tian Stone, the temperature needs to be high enough.

Underground fire meets this condition, but because the ambient temperature is too high, many methods cannot be used.

Ah Jing now used some kind of magic to suspend the fragments of the Heaven-Fixing Stone above the lava. Although the temperature here was not high enough, the heat flow was less disturbed and could be taken out at any time.

If it were immersed in the underground fire and stirred by the constantly rolling lava, and even got out of control and sank into the ground, there would be no way to fish it out.

Chen Guanshui tried using the Five Elements Divine Light and found that although it could repel the earth fire and prevent the Sky-Burn Stone from being swept away, the heat of the earth fire was too overwhelming, resulting in a huge consumption of the Five Elements Divine Light. This was a typical case of quantity overwhelmed quality.

If the entire smelting process is to be maintained, the amount of true energy required would be extremely huge. Chen Guanshui does not want to be a "valve regulator", so he decisively decides to find another way.

Looking at the many magical weapons and flying swords, although there are some that can withstand the earth's fire, they are not suitable to be used as fire tongs to fix the Sky-Repairing Stone.

After thinking about it carefully, I feel that the only option is to use the formation.

"How about using a formation?" Chen Guanshui suggested.

Formation... Kunlun Mirror thought about it carefully. Since it can even seal the chaos in the earth's core, it should not be a problem to simply introduce the earth's fire for smelting.

"Then I'll leave it to you, Guanshui." She nodded in agreement.

Going back a few days, the three people who came out of the Yutingmen secret realm soon fell into some expected internal strife.

"Where on earth did he run to?" An Zhisu wanted to continue chasing him, but he also realized that he had lost track of him now, and the probability of encountering him while wandering around on the sea was like looking for a needle in a haystack.

I still have to seek help from Shi Liuli's magic and divination skills.

Shi Liuli was silent and suddenly heard Xu Yinglian say:

"Let's not talk about anything else for now. I think Daoist Fellow Dongyou seems to know that person."

An Zhisu:?!

She immediately ignored everything else and just stared at Shi Liuli in surprise, wondering how come her junior brother knew Dong You... Oh, they had met before during the Baiyujing competition, so this wasn't strange.

Shi Liuli was not as honest and straightforward as An Zhisu. He knew that Xu Yinglian was no longer going to test him and was going to ask directly. So he smiled and said:

"I think that person's relationship with Fellow Daoist Qiongying seems to be even more complicated."

Xu Yinglian fell silent after hearing this.

Of course, she had already seen that the man had a close relationship with Shi Liuli and An Zhisu.

If that person was really Qiu Changtian, then when did he provoke Jiang Xiao to fight and kill him, and when did he make Dong You come to help him?

She felt vaguely uneasy, but the truth was too outrageous to guess, so she asked coldly:

"Fellow Daoist Dongyou, why do you ask about my relationship with that person?"

"I would also like to ask Fellow Daoist Qiongying the same question." Shi Liuli said with a smile.

Xu Yinglian looked at her in silence, thinking that if she continued practicing Tai Chi like this, the topic would not be able to continue.

Therefore, she weighed the pros and cons for a moment and said bluntly:

"I suspect that person is Elder Chang Geng who left Kunlun Taiqing Sect."

"Absolutely impossible!" Before Shi Liuli could speak, An Zhisu spoke first, saying confidently, "That man is Elder Qing Heng of my Shushan, the Master of Taiyin Sword! As a senior sister, how could I be wrong?"

"Do you have any evidence?" Xu Yinglian frowned and asked, "I have never seen the Taiyin Suming Sword."

An Zhisu was stunned at first, but he quickly put his knowledge into practice and asked Xu Yinglian:

"I have never seen him use thunder magic. What evidence do you have to say that he is Kunlun Changgeng?"

As for evidence, although there were many suspicious points about that person, Xu Yinglian did not have any clear evidence to prove that the other party must be Qiu Changtian.

But she was a very smart person after all, and of course she would not be stumped by such a question, so she just laughed and said:

"How come there is no evidence? Previously in the Hehuang area, I saw him use a secret method with my own eyes. It was a derivative of my Kunlun's "Nine Heavens Pure Land Realm Mantra". If he is not Chang Geng, who else could it be?"

"This..." An Zhisu was suddenly stuck, and after a while he argued, "The True Words of Entering the Nine Heavens Qingwei Realm is not something that only Chang Geng knows!"

“But who else could it be except my senior brother Chang Geng who knows the Qingwei Mantra and has the Tianyuan Yiqi Sword?” Xu Yinglian asked immediately.

An Zhisu finally couldn't answer, and thought in despair:

If he had used the Tianyuan Yiqi Sword, could it really be Chang Geng... No, it is also possible that the sword fell into the hands of my junior brother, but how to explain that he has mastered the "Nine Heavens Qingwei Realm Entry Mantra"?

Shi Liuli watched coldly and had already guessed that Xu Yinglian was lying.

If she really had decisive evidence, how could she be so calm at this moment? Seeing me blocking the attack for her husband, her face had already turned strange, okay!

Now he can still hold back and test carefully, but he is just not sure whether that bastard is really Kunlun Changgeng... otherwise he would not be able to sit still.

After thinking for a while, Shi Liuli suddenly said:

"Isn't this just Brother Qiongying's personal opinion?"

"If he knows the Nine Heavens Pure Land Realm Mantra and has the Tianyuan Yiqi Sword, then he must be Kunlun Changgeng without a doubt."

"You should hurry back to the sect to report now. Why are you wasting time with us here?"

"That's right!" An Zhisu woke up as if from a dream and immediately sneered, "Since you have obtained solid evidence, you can just go back to Kunlun for help. Why come here to ask for divination?"

"Brother did not betray Kunlun, but left the mountain to establish himself. There is no need for Kunlun Taiqing Sect to go to great lengths to find him." Xu Yinglian lied seriously, "I just wanted to ask him some questions."

But An Zhisu was stubborn, and no matter how much she said, he refused to believe her and just said coldly:

"If Kunlun Taiqing Sect is interested in the Taiyin Suming Sword, then I advise you to give up the idea, otherwise you will have to fight with Shushan sooner or later."

Xu Yinglian was speechless, thinking, I just came to find my senior brother, how could it be related to Taiyin Suming Sword? Besides, why are you so sure that the other party is Shushan Qingheng, the master of Taiyin Sword?

Shi Liuli watched the two people arguing with each other and sighed in his heart.

If the hexagram had not shown that it was indeed the case, who would have thought that the bastard actually had three identities at the same time?

She had no intention of clearing up the misunderstanding, she just watched the two people quarreling, hoping that their relationship would continue to deteriorate to avoid the possibility of them joining forces in the future.

But not long after, a black wind suddenly came from the sky, laughing and saying:

"May I ask the three Taoist friends, have you ever seen my husband?"

As soon as she finished speaking, Xu Yinglian, An Zhisu and Shi Liuli all stopped talking and acted as if they were facing a formidable enemy.