The mysterious ancient battlefield, when Lin Feng stepped into it again, it felt very different. The last time he entered the ancient battlefield, he only had a few hundred million world combat power.

Therefore, he was also cautious when entering the ancient battlefield, and he was even ready to use the spatial disk and the space-time mark at any time, which can be said to be extremely cautious. Even the "Thunder Sea" in the ancient battlefield cannot be entered, and it should be the core of the ancient battlefield.

But now, Lin Feng has long been different from what it used to be, with a full fifty billion world combat power, it is like walking in the ancient battlefield, without feeling the slightest threat.

Finally, Lin Feng came to the "Thunder Sea" again.

Last time, Lin Feng couldn't enter the Thunder Sea, just getting close to the Thunder Sea, he would feel a fierce danger, as if once he stepped in, he would face a threat of life and death.

But now, Lin Feng almost didn't feel any danger anymore, and the five billion world combat power was enough for him to deal with any threat.

"Let me see the true secrets of this ancient battlefield. ”

Lin Feng's spirit was radiant, and he also made up his mind in his heart.

"Whoosh".

Lin Feng's figure flashed, and he directly raised his feet and stepped into the thunder sea.

"Boom".

As soon as Lin Feng stepped into the thunder sea, the entire thunder sea violently "shook", like a drop of water dripping into the hot oil at once.

The thunder sea shook violently, and a terrifying force swept towards Lin Feng in an instant, like a rolling wave, submerging Lin Feng.

Lin Feng felt many powerful realm rule fluctuations in it, and these realm rules were all able to mobilize a certain amount of power, which was simply incredible.

The owner of each rule, if he was alive, is afraid that he is a two-star supreme of more than 10 billion yuan, and it is definitely not one or two, but at least ten or more, and there are even some vague existences of more than 100 billion yuan.

Therefore, this huge thunder sea has been formed, without billions of worlds, it is impossible to step into the thunder sea at all, even if it is a billion-level supreme, it is very dangerous to step into it rashly.

One after another, the power of thunder swept towards Lin Feng fiercely. But above Lin Feng's head, there were realms of phantoms, and the terrifying power permeated his body. Let these thunderbolts crash on your body, and you will not move.

With the power of five billion worlds, what other power can be shaken? If the master of the rules in this thunder sea is still alive, then Lin Feng is still afraid of one or two.

But the owners of these rules are dead, and now there are only a few residual rules left, how can Lin Feng care? However, Lin Feng also saw some clues from so many rules, which made his inner guess even firmer.

This ancient battlefield must be the battlefield of the previous era, or the battlefield of the previous era, in short, it is definitely not the battlefield of this era. With the current situation in this era, how could so many two-star supremes fall?

"Boundary stones, a lot of boundary stones!"

Lin Feng did not forget his purpose, when he stepped into the Thunder Sea, he saw that the Thunder Sea was densely packed with demarcation stones, one after another, floating in the Thunder Sea.

Moreover, the quality of these boundary stones is quite high, even far higher than Lin Feng thought, just grab a handful, they are at least comparable to hundreds of ordinary boundary stones, almost two hundred worlds.

It is unheard of for such a high-quality boundary stone, and it appears in large quantities.

Lin Feng entered this ancient battlefield for the purpose of the Boundary Stone, so he was not polite, and directly began to "sweep" the Boundary Stone in the Thunder Sea. One after another, all of them were swept away.

Lei Hai was too big, and the deeper he went, the more Lin Feng felt the pressure. Fortunately, he had the power of five billion worlds to protect him, even if Lei Hai's pressure increased tenfold, Lin Feng would be able to withstand it.

And the number of boundary stones he "scraped" is also increasing.

10,000, 100,000, million......

In the blink of an eye, Lin Feng had collected almost two million Boundary Stones, which seemed to be very small in number, but the quality was excellent. What does it mean that the worst Boundary Stone can hold almost two hundred worlds?

It means that these two million demarcation stones, once the world origin is sufficient, can grow at least 400 million worlds!

This kind of harvest is greatly beyond Lin Feng's imagination, and this is just the beginning, he has not even been able to explore one-fifth of the Thunder Sea, and there are still a large number of boundary stones "waiting" for Lin Feng to "scrape".

As Lin Feng continued to go deeper, the number of boundary stones he harvested became smaller and smaller, but the quality became higher and higher.

"Huh, this demarcation stone, a one-star demarcation stone?"

Lin Feng's eyes suddenly lit up, and he saw that there were several boundary stones in front of him, which seemed to be different. Immediately, he grabbed it, and there were five demarcation stones, all of which were one-star demarcation stones.

And the quality is very high, it is a million-level boundary stone.

Just these five one-star boundary stones could add millions or even tens of millions of worlds to Lin Feng's combat power.

As Lin Feng gradually deepened, he encountered more and more one-star boundary stones, and the quality became higher and higher, this was simply a great harvest, of course Lin Feng would not be polite, and they were all in his pocket. Now his most urgent thing is to improve his strength, so the demarcation stone is the key.

He knew that like the last Qianyu Supreme mission, he had obtained a full nine two-star demarcation stones. This kind of is almost impossible to meet, and there are only a few people who can be like the Qianyu Supreme Na Yong, who has a profound background, and who will take out so many two-star boundary stones?

Therefore, Lin Feng knew very well that there was only one such opportunity, and it was impossible to meet it. If he wanted to get more Boundary Stones, he would have to find another way.

This mysterious ancient battlefield was the "Holy Land" that Lin Feng couldn't give up, and he had to "sweep away" all the boundary stones here before leaving.

"Ten million-level one-star boundary stone!"

Finally, Lin Feng had already approached the core area, and he had also discovered some tens of millions of boundary stones, and these tens of millions of boundary stones were a few or dozens as soon as they were discovered.

It was a great harvest, and Lin Feng was naturally overjoyed. But it wasn't over yet, Lin Feng continued to go deeper, he was already close to the core area, and he clearly felt the strong rule fluctuations.

This kind of regular fluctuation was greater than the regular fluctuation of any demarcation stone that Lin Feng had ever touched.

"Huh".

When Lin Feng dispersed the thunder around him, all within a radius of a million miles, all became "calm". Lin Feng finally "saw" the two boundary stones.

These two demarcation stones, like the stars holding the moon, are surrounded by many demarcation stones in the middle.

Even, the fluctuation of the rules that came out made Lin Feng feel a trace of pressure, so he had to exert all the power of the realm in his body.

Moreover, Lin Feng withstood the pressure and kept walking towards the two demarcation stones, the closer he got, the more excited Lin Feng's heart became, and even his excited body couldn't help but tremble slightly.