Yin Yang Demon Thunder, this is definitely a terrible thunderbolt.

How terrible is it?

In the tens of millions of years since the Nine Realms, there are almost no people who have subdued the Yin Yang Demon Thunder in the annals of history, and the only one is the Lord Lei Zu in the Thunder Sea.

The original Lei Zu was a real legend.

Such a person, even Gu Zhun has to have some respect.

After all, Lei Zu's life is too legendary.

And the height that Lei Zu, who founded Lei Hai back then, reached at the peak of his life was also very terrifying.

The original Lei Zu is said to have subdued such a Yin Yang Demon Thunder, and since then, among the Nine Realms, there has been a record of Yin Yang Demon Thunder.

And how terrifying is the Yin Yang Demon Thunder?

Someone once saw with their own eyes that when Lei Zu had just completed the Yin Yang Demon Thunder, Heavenly Dao had sent down several Zixiao Divine Thunders out of jealousy, wanting to eradicate Lei Zu and the Yin Yang Divine Thunder on his body, just because Heavenly Dao had already sensed that the Yin Yang Demon Thunder on that Lei Zu's body was a huge threat to himself.

But even so, after the Heavenly Dao descended the Zixiao Divine Thunder, Lei Zu was still unscathed, and even the strength of the Yin Yang Demon Thunder directly defeated the Heavenly Dao's Zixiao Divine Thunder, but instead slapped the Heavenly Dao hard.

And from then on, even Heavenly Dao didn't dare to interfere with Lei Zu who was at his peak.

It wasn't until many years later, because the energy of the Yin Yang Demon Thunder was too strong, and there were some mistakes in the cultivation of the Lei Ancestor in his later years, so the control of the Yin Yang Demon Thunder was out of control, resulting in the thunder and lightning in the body, which led to the fall of that Lei Zu.

But to sum up, in Lei Zu's life, even the Heavenly Dao can be tough, which is probably something that many emperors dare not do.

That's why the horror of that Lei Zu and the Yin Yang Demon Thunder is so deeply rooted in the hearts of the people.

At this time, Zhang Zhen said Yin Yang Demon Thunder, and Gu Zhun's face also changed a little.

It's no wonder.

No wonder he sensed that something was always wrong in this place in Leiyang Valley before.

And when he grabbed this thunder core by himself, he also felt some other powerful forces within this thunder core.

It turned out that there was still a trace of yin and yang magic thunder here.

It seems that this matter is even more interesting.

This can also explain why Lei Hai's group of old immortals would be willing to let a core disciple like Zhang Zhen come out and lurk in Shenxia Sect for so many years just to capture this thunder core.

If it is said that it is just for a thunder core, it is certainly illogical.

But if it's for the Yin Yang Demon Thunder, then it can be said.

"Yin Yang Demon Thunder!

Gu Zhun looked at the thunder core in his hand and said slowly.

Something like Yin Yang Demon Thunder, even Gu Zhun had to re-evaluate.

After all, this is also the ghost thing that ate Lei Zu in the first place.

A character like Lei Zu, but Gu Zhun didn't dare to despise it at will.

This kind of treasure at the bottom of the box, of course, Gu Zhun attaches great importance to it.

But at this time, Zhang Zhen on the side spoke, only to see him rub his hands at this time, and said to Gu Zhun: "That, senior, we said before, I told you everything you want to know, you see, should you ......?"

Zhang Zhen was also a little expectant, and asked Gu Zhun.

After all, the thunder core is definitely of great benefit to Zhang Zhen.

Not to mention that there is a peerless treasure such as Yin Yang Demon Thunder inside.

So Zhang Zhen is naturally looking forward to it at this time.

However, Zhang Zhen was also a little worried when asking.

What if this senior really repents at this time?

It's not impossible.

After all, this is a yin and yang demon thunder.

It's not just ordinary thunder and lightning, no matter who you are, you'll be tempted by such a treasure.

But although Zhang Zhen thought so, to his surprise, Gu Zhun was as abnormal at this time, and almost had no intention of repenting, so he directly handed the thunder core to Zhang Zhen.

There are two reasons for this.

First, Gu Zhun is not the kind of person whose words don't count.

Even if there is the existence of Yin Yang Demon Thunder in this thunder core, it doesn't mean anything, after all, although the Yin Yang Demon Thunder is powerful, it is not the kind of thing that really makes Gu Zhun grab it with red eyes.

Moreover, as an old guy who has lived for tens of millions of years, he can be said to be older than anyone else, let alone a little Zhang Zhen, Zhang Zhen is now in Gu Zhun's eyes, a junior among Lei Hai's juniors.

And at the beginning, whether it was the old guy Lei Zu or the kid of the Yuan Tianshen, they had a good relationship with Gu Zhun, and even one step away, Gu Zhun married them on Lei Hai's side, and the relationship between the two has always been good.

In this way, Gu Zhun, as an elder, can't do anything to break his promise to Lei Hai's people.

This is not Gu Zhun's style, after all, since he agreed to Zhang Zhen's matter, Gu Zhun still disdains to violate anything.

And the second reason is that, in fact, even if there is the existence of Yin Yang Demon Thunder in this thunder core, but with the current realm and means of this shocking ghost, it is not easy to extract the Yin Yang Demon Thunder from a thunder core, or even impossible.

Unless he can bring this thunder core back to his own sect and hand it over to Lei Hai's old guys to deal with, with Lei Hai's old guys' research on the thunder core and thunder method, maybe he can really bring up the yin and yang demon thunder in it.

But the key is that it is impossible for Zhang Zhen to send this thunder core back.

After all, with Gu Zhun watching him here, it was impossible for Zhang Zhen to do anything from under Gu Zhun's nose.

If this kid can really send this thunder core back to the Thunder Sea under such circumstances, then Gu Zhun won't have to mess around.

Therefore, now Gu Zhun doesn't have to worry about the problem of Yin Yang Demon Thunder at all, so what about lending it to you?

And at this time, Zhang Zhen also took over this thunder core with a surprised face, originally, Zhang Zhen was still a little surprised, this senior didn't have the slightest intention of repenting, but Zhang Zhen is also a smart person.

The stakes are at stake after a little thought.

And after Zhang Zhen figured out these things, he naturally understood what this senior meant, so his face at this time was also bitter, but there was nothing he could do.

So at this time, Zhang Zhen could only put away the thunder core first.

Now that he is in the Thunder Yang Valley, it is naturally impossible to absorb this thunder core now.

In case it was discovered by some demon beast or someone from the Shenxia Sect at that time, it would not be a good thing, so Zhang Zhen was going to take it back and absorb it.

And on this point, Gu Zhun naturally has no opinion.