Xiao Cheng saw that the Nine Xuan Compass had moved, his eyes couldn't help but light up, he had been looking for several hours in the lava river, and the Nine Xuan Compass finally reacted, which meant that there must be some kind of heavenly and earthly treasure containing the essence of fire around him.

The effective sensing and guiding range of the Nine Xuan Compass is one thousand meters, but the sensing range is more than one thousand meters, and the richer the essence of a certain place, the greater the sensing distance.

Xiao Cheng pinched out a dirt walking technique, and was moving quickly through the rock formation, but there was no river bank or ready-made road in the underground lava river, and the lava river was flowing in the rock formation, so it was more difficult and dangerous to walk.

Xiao Cheng quickly walked north, and the reaction of the Nine Xuan Compass became more and more violent, and finally gave a clear direction.

Xiao Cheng quickly determined the approximate location, but he didn't immediately rush into the location where the essence treasure was.

The place where the fire line is rich in essence is likely to be a place with extremely high temperatures, and because he has mastered the fire escape technique, he has a strong ability to resist fire, but there is also an upper limit.

Xiao Cheng released his divine sense to sweep the rock formation, and found that there was no zài magma in it, so he cautiously escaped into the rock formation, and quickly approached the direction guided by the Nine Xuan Compass.

Xiao Cheng came to the exact position, pinched out an earth seal, stretched the rock layer into a circular hole, and casually shot out a fireball to illuminate the hole.

Although he has excellent eyesight, he is unable to see his surroundings without light at all. As the fireball rose, the situation in the cavern immediately came into view, and many red points of light shimmered on the walls of the cave, emitting the luster of gems.

Xiao Chengding saw that the rock formations were all red gems, the gems were large and small, the big ones were the size of thumbs, and the small ones were only the size of rice grains, and there were dozens of them.

It was clearly a vein of gems where Lingyan gems gathered, not one or two Lingyan gems.

Xiao Cheng smiled excitedly and said to himself, "It seems that finding Lingyan gems to improve the level of the Huoli Sword is not as difficult as imagined, it's quite easy!"

Lingyan gems are extremely precious and rare for any cultivator, that is, he has created a compass that can find Lingyan gems, and can freely shuttle through rock formations to withstand high temperatures, so no one can come here to find Lingyan gems unless they die.

Xiao Cheng's divine sense locked all the Lingyan gems in this vein, roughly hundreds of Lingyan gems of different sizes.

Xiao Cheng didn't procrastinate, and immediately sacrificed the fire sword and rushed to the rock wall, quickly absorbing the fire essence in the Lingyan gem.

Hundreds of Lingmiao gems sounded like a lot, but the absorption of the Huoli Sword was extremely large, relatively speaking, it was nothing at all, and it could not satisfy the appetite of the Huoli Sword at all.

After more than ten minutes of absorption, the Huoli Sword sucked up the Lingyan gems in this vein, and all the Lingyan gems turned into dull ordinary stones, and the sword body in the Huoli Sword's maximum state also increased by two inches.

"At this rate, I'm afraid it will take at least twenty or thirty of these veins to raise the Huoli Sword to the level of Cheng Dù that can fuse the Four Elephant Sword. Xiao Cheng had a rough guess, and an earth escape technique disappeared into the cave, and continued to look for the next target.

Finding Lingyan gems to improve the Huoli Sword was of course an extremely boring task, but he enjoyed it, and every time the Huoli Sword improved, he felt more happy, and he was one step closer to the goal.

......

In the dormitory, Venerable Ling Yu finally slowly opened her eyes after two hours of deduction, showing a relieved smile, she changed the two places of this method slightly, and after several verifications, she finally confirmed that the transformed method was helpful to her situation.

Xiao Cheng found that Venerable Ling Yu opened his eyes, smiled faintly, and asked, "How is it, can it be useful?"

"It has been successfully changed, thank you Xiao Daoyou for your method and treatment, Xiao Daoyou's superb medical skills make me very impressed, and I have been waiting for me for a long time!" Venerable Ling Yu showed a soft smile, at this time she was a little kinder than before, and the feeling of alienation disappeared without a trace.

"Venerable Lingyu, you're welcome, it should be!" Xiao Cheng breathed a sigh of relief, he was really a little worried that Venerable Lingyu would use him as medicine, if it was hard, he really didn't have much ability to resist in the face of Venerable Lingyu.

"Then how should we heal next?" Venerable Ling Yu asked very cautiously, and his attitude towards Xiao Cheng became extremely respectful.

If Xiao Cheng hadn't come to diagnose and treat it this time, I'm afraid no one would have been able to notice these problems, and when it came to the tribulation, she would have lost the opportunity to ascend to the immortal, isn't it just for this step of practicing for hundreds of years?

Now there is a method to transform the true qi, but how to treat this problem, she has no clue, the pure yin true qi in the yin acupoint is not within her control at all, it is completely independent

"This is easy to do, using the pure Yang True Qi as a medicine, His Holiness only needs to wrap the Pure Yang True Qi through the Yin Hui Acupoint to activate the Pure Yin True Qi in it, and the Pure Yin True Qi will follow the Pure Yang True Qi and make all kinds of changes according to your will!" Xiao Cheng explained.

The principle of this method is actually very simple, that is, using pure yang true qi as bait, yin and yang attract each other, and pure yin true qi naturally follows the pure yang true qi flow.

Venerable Ling Yu's expression changed slightly, and her instinct was a little resistant, how could her body allow other people's true qi to enter? Not to mention that it was pure yang true qi, it was even more uncomfortable.

But this is a treatment, and it is much gentler than the first way, and she is not a pedantic person who does not know how to change, after a slight hesitation, she nodded and agreed, and handed her wrist to Xiao Cheng.

Xiao Cheng's finger pressed on Venerable Ling Yu's wrist, of course he would not be stingy with a little pure yang true qi at this time, pure yang true qi was just used as a medicine, and it didn't use much, not to mention that pure yang true qi was often useless for him.

Xiao Cheng slowly crossed into a trace of pure yang true qi, and Venerable Ling Yu immediately wrapped the pure yang true qi with true qi, the pure pure yang true qi was extremely strong, with a majestic male breath, which made her feel extremely peculiar, this feeling was not bad, and it was even very comfortable.

Venerable Ling Yu didn't have time to think about it, her true qi far exceeded the strength of Xiao Cheng's true qi, and she would soon digest this trace of pure yang true qi, so she had to seize the time to draw out her pure yin true qi.

The pure yang true qi flowed into the Yin Hui acupoint as fast, and the pure Yin True Qi that had been silent for countless years immediately became restless, closely chasing the pure Yang True Qi flowing out of the Yin Hui acupoint and into the vast meridians.

Pure Yin True Qi is a more advanced True Qi than ordinary True Qi, and it is also the True Qi that exists in her body, and it is impossible to refine, so then use Pure Yin True Qi to assimilate the True Qi in her dantian and turn it into Pure Yin True Qi.

Her True Qi is so abundant and majestic, it takes a lot of time to completely transform into pure Yin True Qi, and it is by no means something that can be completed in a short period of time.

The two of them did not rest this night, and Venerable Ling Yu continued to transform his true qi, and every time after the pure yang true qi was consumed, Xiao Cheng would inject a trace of pure yang true qi into Venerable Ling Yu.

After a night of practice, Venerable Ling Yu's temperament has also undergone subtle changes, from the previous pure and cold to soft, as if after a transformation, a new look, full of women's unique charm, full of femininity, sweeping away the stale and melancholy atmosphere when I first met.

The first ray of sunlight shines through the window and enters the dormitory, and Venerable Ling Yu opens his beautiful eyes like autumn water, glowing with a unique luster, and the whole person is like a gardenia blooming in the morning, with crystal dew hanging on it.

Venerable Ling Yu was originally a man who captivated the country and the city, and now it is even more beautiful that people dare not look at it, Xiao Cheng glanced at it, and quickly retracted his gaze, and asked casually: "Venerable Ling Yu, good morning, how is it, have you been completely transformed?"

"The transformation has basically been completed, the golden pill has become the yin pill, just practice and consolidate for another day, and thank you Xiao Daoyou, if it weren't for Xiao Daoyou's diagnosis and treatment, I'm afraid I would have died or lived this time!" Venerable Ling Yu smiled slightly and said gratefully.

At this time, she was in an extremely good mood, after transforming the pure yin true qi, she obviously noticed the improvement of her strength, and the true qi was more tame and flexible, which made her more likely to win the tribulation the day after tomorrow, and it was fortunate that the tribulation could increase the odds of winning by one point, not to mention the increase of one percent, and she was even more grateful for Xiao Cheng's help.

Venerable Ling Yu finished speaking, and the brilliance in the jade hand flashed, and a black long sword appeared, the body of the long sword was dark and without any luster, and there were three oracle bone inscriptions engraved on it, which looked extremely simple.

Xiao Cheng looked at the black long sword in Venerable Ling Yu's hand, and let out his divine sense to sweep it, but he couldn't perceive the existence of the black sword at all, and couldn't help but be moved, this sword is definitely not simple.

The three oracle bone inscriptions on the black sword, Xiao Cheng can recognize them at a glance, these three words are the name of this sword "Ruyi Sword", and it can be judged from the oracle bone inscription that the age of this sword is probably relatively old.

"This sword is called Ruyi Sword, it is a sword weapon, and it is also a special magic weapon, as far as the sword is concerned, it is not worse than the famous sword, sharpening iron like mud, and there is no hard thing to urge.

However, it does not have the spirit of sword intent, which means that any kendo powerhouse can use it, and there is no need for kendo to match each other.

Why is it a magic weapon, because the sword weapon cannot change the size, but this Ruyi sword can change the size and has a certain defensive magic weapon defensive effect.

The reason why it is called the Ruyi Sword may be because it does not need to match the kendo, and any kendo strong person can use it, and it can change the size at the same time.

This Ruyi sword is many years ago, I entered the Kunlun ruins to experience and find, it should be an ancient weapon, I have also practiced fur swordsmanship, it is my portable weapon, as a flying sword to use.

I'm about to cross the catastrophe, and it's useless to keep it, so I'll give it to Xiao Daoyou!" Venerable Ling Yu said with the Ruyi Sword, his beautiful eyes flashing with reluctance.

After listening to Venerable Ling Yu's introduction, Xiao Cheng was even more uncontrollable, this sword was really a good sword, and it was also very suitable for him, and it could even be said to be tailor-made for him.

Although he already has the Nine Xuan Sword, the Nine Xuan Sword can't be used casually, he usually uses the Qinglong Sword, but he is used to using the giant sword, and then using the Qinglong Sword is a little uncomfortable, just like holding a toothpick.

The sword weapons have a certain specification and cannot be changed in size, and he can pick the sword weapon in the hidden sword tower, but there is no suitable one.

Now that he has faintly touched the realm of sword intent, he can't get a sword weapon that is completely suitable for his sword path, his sword path is too complicated.

Although there is a heavenly monument, he can forcibly recognize the master without matching the sword weapon Kendo, but in the end, he will not be able to exert the power that the sword weapon should have.

This sword does not need to match the kendo at all, and it can also change the size, of course, it is the best choice.

――

[Three more to ...... Rolling all over the ground begging for recommendation votes, thank you for your support!]

~RS