Wei set up a formation and hid underground with Lulu, and on the ground, the evil demon Mujia quickly calmed down from the brief shock after losing the traces of the two of them, and his divine consciousness instantly stretched, covering a radius of thousands of miles. nBEn。 For Mu Jia, whose strength is second only to that of peak powerhouses such as the Immortal Emperor and the Demon God, it is not difficult for the divine sense to cover a range of thousands of miles. Mu Jia didn't believe that Wei Jingzhen and Lulu could escape thousands of miles away in this instant, and if it were him, it would be impossible for him to teleport so far at once.

As one of the few powerhouses in the Demon Realm, Mujia has been able to survive so far, of course, not only by luck, but also by his cool head, in addition to his strong strength. The relics of this barren mountain and waterfall, Mu Jia originally planned to capture it alive and collect blood to refine a special medicine to cultivate a lost pupil technique in the demon world, but it was a pity that it was ...... But the remnants of Ran have been devoured by Lulu.

Mu Jia frowned and pondered while searching with his divine sense, "Those two people must not have gone far, they must be hiding around here with some unique magic weapon." Hmph, I'd like to see how long you can hide!" Muga sat down cross-legged on the ground with his mind wide open.

And deep underground, in the space opened up by the formation, Wei Jingzhen was abandoning all distractions and completely immersed in the deduction of logarithmic calculations. Coincidentally, Wei Jingzhen made two major deductions on the evolution of arithmetic, and they were all underground, once in the gloomy swamp in the south of the human realm, and once under the barren mountains and waterfalls in this demon realm. Lulu next to him also sat aside silently while Wei was stunned and deduced, and began to cultivate the innate demonic qi of the spirit beast.

Ran's relics, which were devoured by Lulu, are said to be able to improve people's eyesight and even practice some mysterious pupil techniques. After Lulu completely digested Ran Yi's essence and blood, not only did his demonic aura improve, but even his eyes that had been closed all the time seemed to have aura, his long eyelashes trembled slightly, and Lulu slowly opened his eyes......

The space underneath was dark, but Lulu clearly saw the figure of Wei Jingzhen burying his head on the ground.

"I ...... Can I see it?" the physical changes made Lulu surprised, excited, joyful, excited...... Lulu trembled and stretched out his hands, in the dark, the slender ten fingers were so clear.

"My eyes...... I can really see it!" Lulu was excited, and was about to tell the news to Wei Jingjing, who was not far away, but when he saw that he was concentrating on the ground, he immediately dispelled the idea of his heart, and just sat quietly and watched.

The ground in the formation space had already been stung by Wei and painted with dense characters. This is a kind of numerical symbol created by Wei Jingzhen himself in the gloomy swamp, which has represented all kinds of complex numbers.

At this time, Wei was stunned, completely immersed in the world of counting, unaware of the passage of time. At the beginning, Wei Jingzhen copied more on the ground, thinking less, often on the ground for a long time, only to think for a while, and later, Wei Jingzhen gradually thought more, copying and deducing less, often buried in the head for a few months, before carving a few obscure symbols on the ground.

Time passed in a hurry, and Wei Jingzhen didn't notice at all that as he went farther and farther on the road of mathematical evolution, the blue yuan force in his body was also slowly improving and strengthening, as if this yuan force and the mathematical evolution of heaven and earth were different paths and the same origin.

On this day, Wei Zhen raised his head from a long thought, smiled and carved a few scribbled characters on the ground, "This 'tenth yuan' finally has some eyebrows!" and then happily looked at Lulu next to him, "Lulu, how long has it been since this day?"

Lu Lu fluttered with a pair of big smart eyes, and his face was full of smiles, "Congratulations to the Sect Master! More than two hundred years have passed since the Sect Master came to this underground......

"So long?" Wei was startled, then stared into Lulu's eyes and asked suspiciously, "Lulu, you...... Your eyes ......"

"Sect Master, my eyes are already able to see things!" Lulu's eyes were full of smiles, "This is thanks to that Ran Yi, if I hadn't devoured it, I'm afraid I wouldn't have been able to see things, after all, we Sky Devouring Beasts themselves have no eyes." ”

"Lulu, congratulations, it's better to be able to see with your eyes than to use your divine sense to snoop all the time. Wei smiled in surprise, "However, I just don't know if the evil demon Muga has left." ”

Hearing Wei Jing's words, he couldn't help but smile and said, "Sect Master, why don't you let me go up and investigate." ”

"No!" Wei shook his head, "That's too dangerous." Two hundred years is not a short time, but for a demon like Muga, it is just a moment in the long river of time. He hasn't found us yet, so he won't leave so soon. It's a pity that we can't use our divine sense to investigate, or he will surely find us. Wei thought for a moment and said with a smile, "Since that Muga didn't chase after him, we don't have to worry about him for the time being." My calculation and deduction have reached a critical moment, and after a while, I will be able to make a breakthrough and improve my formation attainment a lot. Lulu, you cultivate on your own first, and I also have to review a few of my own techniques. I didn't expect time to pass so quickly, and I don't know if my strength has regressed. ”

Wei was stunned and meditated cross-legged as he spoke, and began to practice several methods of concurrent cultivation. As Wei Jing's mind arrived, the surging blue yuan power in his body began to be mobilized. "Heavenly Heart Vast Secret", "Witch Emperor Immortal Body", "Sun Shaking Demon Heavenly Formula", "Peacock Ming King Seal" ...... All the tricks that Mu Fan knew, Wei Jingzhen could skillfully perform them. After the vast azure yuan force had been running in his body for several weeks, Wei opened his eyes in surprise.

"I ...... My cultivation is ...... It has actually been promoted to the realm of a third-grade immortal?" Wei was completely stunned, he had been doing calculations and deductions in this formation space, and had completely abandoned his cultivation, why had his cultivation not only not regressed, but also improved to the realm of a third-grade immortal?

For the improvement of his cultivation, Wei was puzzled, so he tried to fuse the azure yuan power in his body with the last golden karma that belonged to the Buddhist sect. Wei Jingzhen clearly remembered that in his previous cultivation, the Xuanqing Dao Gate True Qi and the *white Wumen True Qi were fused, and finally derived the Emerald Green Yuan Force, which was then combined with the black Demon Gate True Qi with the help of the Demon Naga's Yuan Shen, and derived the Azure Yuan Force. Wei was stunned to see what kind of yuan power would be derived from the fusion of this azure yuan power with the golden karma of the Buddha Sect now.

Due to the ascension of the realm, Wei Jingzhen effortlessly fused the energy of these two different genera together, but the result was greatly unexpected by Wei Jingjing.

"How...... How could this be?" Wei was very surprised, the blue Yuan Force fused with the golden karma, and it actually evolved into a *white Yuan Force, just like the original Wumen True Qi, but this Yuan Force was much purer than the Wumen True Qi.

"Could it be that this is Wu Yuanli?" Wei Jingzhen smiled bitterly, "Could it be that in this heaven and earth, there are four gates of witch, Tao, Buddha, and demon, and only Wu is the Great Dao of Heaven and Earth? Otherwise, why is the fusion of the four true qi such a result in the end?"

"But...... I shouldn't be able to count this as Wu Yuan Force, after all, it is also from the fusion of the four true qi, if it is really Wu Yuan Force, then I am really at a loss!" Wei was stunned, but he didn't know that at this moment, in the infinite depths of the East China Sea of the Human Realm, where the Netherworld Realm collapsed, an illusory golden figure was slowly emerging from the fiery red lava.

This vague golden figure was composed of the "Xi Alchemy Sand" escaping from the destroyed "Dao Reincarnation" scripture scroll after the collapse of the "Soul Suppression Spirit Monument".

After this golden figure appeared, it slowly spit out a slightly surprised voice, "'Reincarnation Yuan Force'? As long as you gather the four great spirit beads, the 'Pure World Flame' that has disappeared since the chaos will probably be able to regain its style. It's just a pity that those four spirit beads are not in the ...... of this heaven and earth" The voice gradually disappeared, and the illusory figure of the golden body was completely hidden.

The appearance of the golden figure, as well as what he said, it was naturally impossible for Wei Jingzhen, who was far away in the ground of the Demon Realm, to know that at this moment, Wei Jingzhen was using this white yuan power to cast four different flames.

Blue, white, gold, and black, the four flames change in turn, no matter how Wei Jing performs, these four flames of different ** qualities can never be fused together like the four true qi, but instead lead to a living spirit - "Suilan Fire Essence".

The "Flint Fire Spirit", which was formed by the convergence of countless red flames, now transformed into a red firesparrow and landed on Wei Jingjing's palm, and the chick pecked rice like rice and sucked the flames that burst out of Wei Jingjing's fingertips.

Seeing this fire spirit, Lu Lu next to him couldn't help but lean his face over, "Sect Master, what is this? Could it be something you transformed with flames?"

"This is the fire essence of the Five Elements Elite. Wei smiled and said, "This fire spirit is not afraid of my flames, if you can cultivate the ** type, I don't know how powerful it will be!"

The "Suilan Fire Spirit" sucked the flames for a while, seemed to have eaten enough, and consciously hid in Wei Jing's storage ring.

"Alright, Lulu, let's continue to work hard!" Wei smiled in surprise, picked up a small stone again, and continued to explore the solution of the "tenth yuan" along the trajectory of his previous thoughts. And Lulu, at this time, also consciously sat to the side, cross-legged to cultivate the unique scarlet demon qi of the demon clan.

Just as Wei Jinglu and Lulu had just entered the state, a powerful divine sense suddenly radiated from the ground, and the hiding place of Wei Jingjing and Lulu was completely spied on at once.

"Not good!" Wei looked at Lulu in shock, "Namuga, we've already been discovered!"

(Full .nbn.)