Hearing the voice, Ye Bing's whole person almost stayed on the spot!

It wasn't until three seconds later, as if he had only understood, that he repeated incredulously:

"It's time to upgrade ???!!!"

He sprang up from his chair in an instant, his eyes looking straight at the main base's attribute interface.

Soon, he saw the "300" displayed in the integral value and the two extra data after that, which were the time and energy required to advance to the next level, respectively!

"God help me, God help me!"

Ye Bing looked up to the sky and laughed, and slapped his palms together hard!

In the long time since Cataclysm began, the Doom main base has only been upgraded once.

But just this time, it made the entire Doomsday Base have an earth-shattering change!

From the beginning with only two dry low-level beam towers and a few low-level units that are as weak as paper, to today's multiple defense towers, mid-level troops, Guangling chariots, and a variety of powerful buildings unique to the Human Legend faction, all of these changes are due to an upgrade of the main base of Doom!

It can be said that just one opportunity to upgrade has made the Doomsday Base almost reborn!

If this time, before the Extreme Cold Night, before the outside forces start a war with you, you can upgrade the Doomsday Base to LV3, then everything will be completely different!

Ye Bing will take the upgraded Doomsday Base technology, like the fierce tigers of the mountains and the surging waves, sweeping across the entire D City!!

When the time comes, no matter what Kobe team, what Shenshui Military Region, or what Razer troops, all of them will kneel at his Ye Bing's feet!

Ye Bing forcibly held back his excitement and fixed his gaze on the attribute of "the energy required to ascend to the next level".

This time. The Doom Base did not give any words, but explained it in numbers and images.

The content is:

500 White Shards, plus 5 Blue Shards!

Seeing this request, Ye Bing's heartbeat almost stopped beating half a beat!

"Haha, sure enough...... There are 500 magic crystals, which is more than I estimated in advance......"

He smiled wryly. There was a hint of bitterness in his eyes.

"In comparison, those 5 blue magic crystals are not too stressful, after all, I still have an excellent quality green magic crystal in my hand, and when converted, its energy is equivalent to seven second-level blue magic crystals. However, as a last resort, it is better not to move as much as possible, once the magic crystal of this quality is used. It's going to be hard to find next time. ”

Speaking of which, to be able to burst out a green magic crystal of excellent quality, it is really Ye Bing, or Uesugi whose luck is better.

Although the mutant Tibetan mastiff can be regarded as a mutant beast with a high demonic nature, in the case that there is still a long distance from the advancement, the possibility of bursting out of the magic crystal is still quite small. According to the situation at that time, the explosion rate of the overstep would not exceed 2% at most.

If it weren't for such a special situation, if you wanted to burst out a green magic crystal. Why do you want to kill a third-order mutant beast? And the strength of the third-order mutant beasts is more than a few or dozens of second-order mutant beasts can compete. What happened in between was at least the evolution of the qualitative change!

Moreover, even if it was an ordinary higher demonic second-order mutant beast, under normal circumstances, it was not something that Ye Bing could afford to provoke. You know, to that level of ferocious existence. If it weren't for the large dose of psychedelic drugs of the Kobe team in advance, it would have been impossible for a few hundred first-order zombies to kill it!

Therefore, this outstanding quality green magic crystal in Ye Bing's hand can be said to have been obtained under very special circumstances. This situation is almost impossible to replicate, and even if they let Uesugi do it again, they may not be sure that they will be able to catch a second-order higher demonic mutant beast again, let alone burst an excellent quality magic crystal beyond the ranks!

Fortunately, Uesugi didn't know that the mutant Tibetan mastiff burst out of a green magic crystal that day, otherwise, even if he fought for his own life, he would have to take the magic crystal back!

Ye Bing calmed down again and began to analyze all kinds of possibilities.

Overall, his only goal at the moment is to upgrade the Doomsday main base to LV3.

To accomplish this, he needs 500 White Shards and 5 Blue Shards.

At present, there are still more than eighty magic crystals stored in the base, and it will take about half a month before other forces find him, and it is optimistically estimated that it will take about half a month. But if you estimate it carefully, I'm afraid it will only take five days!

If the news obtained from Charlie is true, and the Shenshui Military Region really sent thousands of soldiers to look for him in a carpet manner, then this may not happen!

What's more, after so many actions, there are some things that he himself is aware of.

Every time he moves, although he will pay attention to whether there are bad intentions behind him and remove them in time, he cannot stop the eyes of the refugees on both sides of the road.

This meant that within ten kilometers of the Doomsday base, there were definitely people who had seen him and the mech.

If the other party is clever enough to ask for some information from the fugitives hidden in the buildings on the side of the road, and then follow the line of those dots, and connect the city with an arrow, it will be very easy to find his traces!

In addition, according to the experience of the last time, even if he scraped together enough energy to upgrade the main base, it would actually take at least half a day to upgrade.

Calculated inside and out, the safe time left by the enemy for him is probably only ......

Four days!

In four days, you have to get a full 500 white magic crystals and five blue magic crystals.

This amount of task can no longer be simply called "suffering", but should be called "hell"!

"No, in such a short period of time, it is impossible to achieve such a goal by relying only on the Mechanized Corps and the New Territories Troops, we must think of other ways!"

If the task of getting five hundred white magic crystals is not so arduous, then getting five blue magic crystals in one go is not easy.

Because under normal circumstances, if you want to get the Blue Magic Crystal, the most conventional way is to kill those second-order mutant beasts.

However, everyone knows that the number of second-order mutant beasts is very rare, and all of them are strong, even if the current mechanical corps is to deal with it, it will take a lot of effort.

If you want to deal with second-order mutant beasts, the speed of collecting white magic crystals will naturally slow down.

But if you give up searching for the blue crystal, you will have to sacrifice the green crystal that you have obtained in the rare case.

The two are almost incompatible!

Just when he was a little entangled, a crazy idea suddenly came to his mind!

"If it really doesn't work, this is the only way to do it. Since you want to play, just play the second biggest! (To be continued.) )