After discovering the sword-casting pool, Zhong Zihao's first thought was to upgrade the level of the sword.

When he was in the dark space, the sword had officially become a low-grade artifact, and it could also meet Zhong Zihao's daily battles. However, once he encounters an opponent whose cultivation is stronger than him, his rank is obviously a little unsightly.

Although he has the pinnacle artifact Black Flame Demon Sword, he is not easy to use after all, after all, the latter is a treasure weapon that he has refined himself, and he is still a divine weapon with a sword spirit that can evolve infinitely.

Speaking of which, he has fought with the top ten sects and the Protoss, and he has seen a few low-grade artifacts, but he rarely encounters medium-grade artifacts, and he has never seen a high-grade artifact.

At present, there are only a few medium-grade artifacts encountered that draw the Void Heavenly Ruler and a few long swords used by Hu Haoran.

Zhong Zihao wanted to upgrade the level of the Divine Sword more than once, and he also discussed it with Ling Yunqing, but the current hall master of the Instrument Hall couldn't do this.

The current opportunity is obviously an opportunity for the promotion of the Excalibur.

The heat wave in the pool was rolling, and the rich Heaven and Earth Yuan Force condensed into a liquid state, almost filling this sword-casting pool with a radius of several zhang.

Zhong Zihao's face was full of surprise, because he found that this was not only as simple as the strength of heaven and earth yuan, but also the essence of heaven and earth. Otherwise, how could the sword casting pool after thousands of years still maintain this state.

Moreover, with his soul power, it was not difficult to detect that there should be rare materials needed for refining weapons at the bottom of the sword pool. Of course, these materials have melted, or perhaps said remnants.

Even so, it is several times better than the materials that can be collected in the Seven Domains.

"Khooth!"

Zhong Zihao was already a little impatient, and after a slight adjustment, he summoned the Slashing Sword, which let out a cheerful humming sound, and as soon as he appeared, he turned into a streamer and plunged into the sword pool.

He was about to use his technique to help the Excalibur Divine Sword absorb the essence of heaven and earth in the pool, but he was suddenly stunned.

I saw that after the Divine Sword was submerged into the sword pool, the heaven and earth essence qi in it decreased at a speed visible to the naked eye, and it had a tendency to get faster and faster, could it be that it was devouring itself?

That's right, it's devouring, not simple absorption! Zhong Zihao looked shocked, when did the spiritual intelligence of this sword become so high?

After a little thought, he thought of a possibility.

The Excalibur has always been carried by him, and he has been in retreat in the Netherworld for hundreds of years, could it be that this trace of time has been applied to the Divine Weapon, allowing it to quietly grow to such an extent?

Although he thought it was incredible, he couldn't find any other reasonable explanation at the moment, and he could only think so.

But it's okay to save him a lot of time.

After Zhong Zihao observed for a while, he found that there were no other problems, so he sat cross-legged on the edge of the sword pool, and began to practice the same exercises.

He didn't waste a single bit of time, not to mention that the Heaven and Earth Yuan Power here was unimaginably rich, and he would not miss such an opportunity.

Nearly two months have passed quickly, and with this unique cultivation environment, Zhong Zihao has made a lot of progress, his breath has become more restrained, and the true yuan in his body has become more and more condensed.

"...... Sonor"

Suddenly, the sound of Qing Yue's sword resounded through the Valley of Divine Soldiers, and a sword light rose from the sword pool, and after swimming in the sky, it returned to the sky and levitated.

However, instead of disappearing, the sound of the sword continued to resound, and it seemed that it was getting higher and higher.

Zhong Zihao suddenly woke up, and when he looked up, the sword of the slashing god was shining brightly at this moment, and his aura was unprecedentedly powerful, which was obviously one level higher than two months ago.

"Medium-grade artifact!"

Zhong Zihao's eyes froze, and a smile appeared on his face.

After entering the Futu genius for three months, he was able to get this opportunity, and he had a sense of satisfaction that the trip was worthwhile.

Before he could come back to his senses, the Excalibur made another astonishing move.

"Khooth!"

The sound of this sword roar was several times louder than before, and it was accompanied by a special coercion that spread in all directions - sword pressure!

"Buzz ......"

As if in response, a faint buzzing sound sounded in every corner of the Valley of Divine Soldiers, and then bits of light flew out from everywhere, condensed in mid-air, and turned into a half-foot-long sword that swept into the sword body.

In an instant, the momentum of the Divine Sword increased by a few points, and in Zhong Zihao's incredulous gaze, it once again completed its transformation, and its grade was close to that of a top-grade artifact.

It also exudes a mighty heavenly might, as if the king of the sword has descended.

"When did it have this ability?" Zhong Zihao was shocked inexplicably!

The little bit of light just now, if he guessed correctly, should be a fragment of the broken machine spirit, and I don't know why it was scattered here. But the Slashing Excalibur actually showed the power of devouring, fusing it into itself.

However, after all, the spirit of the Divine Sword was cultivated by his own hands, so he could naturally sense its dependence on himself, and that feeling became clearer and clearer.

It wasn't until after the tea time that the sword turned into a streamer and flew in front of Zhong Zihao.

Raising his hand to grasp the hilt of the sword, he suddenly felt a sense of flesh and blood.

"Sure enough, it didn't disappoint me, I look forward to you advancing again and fighting the world with me!"

With loud laughter, he left the Divine Weapon Valley with the advanced Divine Slashing Sword, and there was not much heaven and earth essence left in the sword pool.

Along the way, Zhong Zihao really realized the danger of Fututian.

In half a year, he was caught in the great array, chased by fierce beasts and severed limbs and legs, fought against the mighty sky, and was almost pulled into the turbulence of space...... Without the fountain of life and tenacious will, he would have died many times.

Fortunately, these encounters were not in vain, and they gained a lot during this time, and their combat power has also improved a lot.

The most important thing is that just two days ago, Zhong Zihao harvested a Heaven and Earth Dao Fruit!

The existence of Dao fruit is extremely rare, and it is generally before the supreme power of the Shinto realm sits down, stripping out his life's perception and using it for the use of the mantle and bowl heirs, so that the younger generations can directly get the results of the comprehension of the laws of the Heavenly Dao, and become a peerless powerhouse in one fell swoop.

Of course, this is also equivalent to scattering gong, and once the practitioner strips off the Dao Fa perception, he will not have a few days to live.

However, this kind of Dao Fruit has a drawback, it is not that a martial artist who has comprehended the same Dao method cannot use it at all, and forcibly fusing the Dao Fruit will conflict with his own Dao, and the gains outweigh the losses.

The Heaven and Earth Dao Fruit is different, it is the Heaven and Earth Dao that has been condensed by itself over countless years, because it contains the Ten Thousand Dao Laws and One, and it is suitable for anyone. It's just that how strong the Dao intent contained in it is completely determined by the amount of heaven and earth essence absorbed.

In a closed cave, Zhong Zihao slowly opened his eyes.

In the process of collecting the Heaven and Earth Dao Fruit, he encountered two demon beasts whose strength was comparable to that of the late stage of the Divine Dao Realm, and after several hours of fighting, he almost killed one of them, grabbed this one, and then fled.

It was very easy for him to recover from the wounds of his body, but in this battle, he used soul secret techniques to attack and arrange a variety of formations. His mind and soul were consumed enormously, and after two full days of pranayama, he completely recovered.

Zhong Zihao took out a cyan fruit that exuded a rich Dao rhyme, and chuckled: "There are indeed a lot of opportunities in the Futu Heaven, although this Dao fruit is not superior, it is enough for me to advance my cultivation to the late stage of the life and death realm." ”