When He Daochang said that the violent spiritual power was out of control, Lu He and Chu Yuyan both thought of the oval gem in their hearts at the same time, just because there was also a very violent spiritual power in the oval gem, but Lu He had never studied what it was, so he didn't act rashly.

Now that I think about it, if Lu He and Chu Yuyan study indiscriminately, maybe it will also cause an explosion, and then it will disappear directly.

"Brother Lu, I don't mean anything else, I just want to remind you that you must be cautious about that kind of thing, on the eve of the explosion, my teacher also told me that he seemed to have found a way to draw out the violent spiritual power in the gem, who knows, alas......"

After that, He Daochang turned off the communication jade talisman, leaving only a sigh.

Lu He and Chu Yuyan looked at each other, they didn't expect that kind of oval gem actually contained such a huge amount of energy, just because the gem was too small, only the size of a fist, it was really hard to imagine that the size would actually explode, and the power of the explosion was so huge.

Lu He looked at Chu Yuyan, Chu Yuyan understood, carefully took out a bag of oval gems she contained from the Qiankun ring, closed her eyes, and threw it directly to Lu He.

Lu He almost died of anger, and hurriedly reached out to catch the bag containing the gems, the explosive power of a gem can cover a radius of a hundred miles, and it can blow up an immortal cultivator in the Purple Mansion Realm into ashes, if all the gems in this bag explode, wouldn't it be able to blow up half of Cangshan?

"It's something from the Black City. ”

Li Mengwei stepped forward, looked at the bag in Lu He's hand, and wondered, "Can this thing really explode?"

Lu He's heart moved slightly at this time, these gems were found in the tower of the Night Patrol Division, and there were many books in that tower, perhaps from those books, you can find records related to this.

If it is true that Daochang said that the explosion was caused by these gems, then in the upcoming war, this gem can definitely have a surprise effect, so powerful, even if the immortal cultivators of the Earth Evolution Realm are caught off guard, they will be blown up and killed!

Thinking of this, Lu He immediately spoke: "All of you go to Heicheng with Li Mengwei and find as many of these gems as possible. ”

"Yes!"

Everyone nodded in unison, and everyone understood what Lu He was thinking.

Including five hundred Xuanhuang soldiers, they also entered the black city together, as long as they could find more of this gem, they could form a powerful deterrent to the demon clan.

Lu He, on the other hand, returned to the mountain temple, walked directly into the study, closed the door, and found all the books he got at the headquarters of the Night Patrol Division with his memory, all of which were placed on both sides of the desk, stacked like two hills.

Lu He read them one by one, looking for them word by word, line by line, he read the book very quickly, and he quickly swept through a book in his hand, but he already knew it all, just because Lu He had taken half a day to learn the words of Heicheng, and now he is also very familiar with the words of Heicheng.

Soon after, Lu He found a record of the oval gemstone in a book similar to a naturalist biography.

Lu He recalled that this book was indeed put together with those oval gems at that time, but at that time, Lu He couldn't read the words in the black city, so he didn't concentrate on studying it.

In this book, it is recorded that the oval-shaped gem is called the Orb of Annihilation, which was researched by the craftsmen of the Night Patrol Division in order to use it against ...... God?

Lu He's eyes widened suddenly, and he looked at it carefully twice to make sure that the word was a god.

This is strange, in the black city, the gods refer to those tall giants, that is, the giant gods, those giant gods built the black city, and also sheltered many human races, and even taught the forging techniques they mastered to the human race in the black city, and let the human race in the black city practice, give them exercises, and give them forging weapons, like father and mother, why did the night patrol division study this annihilation orb to fight against the god race?

And, with this thing, are you sure you can blow up the gods in the black city?

Lu He suppressed the surprise in his heart, and after a closer look, he realized that the Annihilation Orb in his hand was only a half-finished product, which belonged to a driving device, and the finished product was many times larger than this Annihilation Orb, and the finished Annihilation Orb could instantly destroy all people and things within a radius of thousands of miles.

The record in the book is gone here, and the rest is to introduce other things.

Lu He couldn't stop being curious: "What happened later?"

Judging from the black city in the world in the painting, the corpses of the giant gods in the black city are all intact, but they have just become zombies, and they also include the human race in the black city has also become zombies, it seems that the human race has not succeeded in eliminating the giant god, because of the strange wind that happened later, causing the entire black city to disappear in the long river of history.

But anyway, at least I know the origin of this thing, and it also leads to a new understanding of the black city, it turns out that the black city is not united, the human race actually wants to rebel against the giant god, but I don't know why the human race rebels against the giant god, is it because the giant god oppresses the human race?

Lu He thought in his heart, it shouldn't be like this, Lu He had read the diary written by the little boy at the beginning, and the diary written by others, everyone worshiped the giant god very much.

Maybe it's because the Terran high-level in the Black City wants to destroy the giant god and then take everything of the giant god for themselves?

Shaking his head slightly, Lu He knew that he couldn't guess any correct answers, so it was better to solve the matter in front of him first, there was no record in this book how to make the Annihilation Orb explode, and Lu He had to find it in other books.

Soon, half a day passed, and Lu He rummaged through all the books, but there was no record of how to urge the method of annihilating the orb.

By noon, Chu Yuyan and the others had found another thirty-seven Annihilation Orbs from the Black City, and they were all carefully preserved, for fear that the Annihilation Orbs would explode.

Lu He stood on the Manggu Sea, holding an Annihilation Orb in his hand, and probed his spiritual sense into the Annihilation Orb.

He was wearing the armor of a mid-grade Dao weapon to protect his body, just because he was worried that if this Annihilation Orb suddenly exploded, his bones would be gone.

But obviously, Lu He thought too much, and in an hour, he tried everything he could, even placing the Annihilation Orb a hundred miles away, and using all his strength to attack the Annihilation Orb, but it had no effect.