After being busy for a long time, Bai Qi collected 187 fire diamonds, selected all of them were large, and used tentacles to get these fire diamonds, each of which had to be wrapped with energy to avoid injury, and the consumption was huge, so he could only choose the best.

It feels almost, if there are more of them, he will not be able to bear it, so he immediately climbs up, he does not dare to fly, for fear that the consumption will not be able to hold on, with the strength to climb up, can reduce the burden of energy, with his current physical fitness, it is absolutely no problem to climb back to the location of the gecko.

Relying on the flight to descend quickly, now climb back, the speed is naturally slower, Sun Jian while searching for the special metal rough on the cliff, while worrying about the situation on Bai Qi's side, almost two hours later, finally saw Bai Qi's tired shadow, Sun Jian jumped a few times to the Bai Qi side, and carried him back to the gecko.

After entering the Gecko, Bai Qi put down everything and spread it aside, gasping for breath, "Damn, I'm exhausted." ”

"Boss, so many fire diamonds!" Sun Jian used a backpack to pack up the fire drills scattered on the ground.

Bai Qi said excitedly, "Wait for me to rest for a while, let's go down together, countless fire diamonds, all of them are naturally formed, maybe the energy below is abundant, and there are no mutated creatures or zombies to absorb it, this is good, let us pick up a big bargain!" ”

Sun Jian poured out a few bags made of baselines, which they specially prepared for entering the underground to collect special metal rough stones, the temperature of the underground is extremely high, they can use energy to form a protective shield to protect themselves, but things like backpacks are not good, the material of the baseline is aerospace material, whether it is high temperature or extreme cold, it has very good resistance, so the bag made of the baseline has become the first choice.

"Okay boss, let's go and scavenge the fire drill in a while, haha! It's much more useful than rough stones! Sun Jian was also a little excited, the effect of the fire diamond is too great, not to mention anything else, each fire diamond can turn an ordinary survivor into an ability, and the 187 fire diamonds that Bai Qi brought back are 187 abilities! What a powerful force this is, even if there are many non-combat types, it is also very important for future development, those bizarre non-combat abilities, put on development, may have miraculous effects, such as Yang Tianfu at the beginning, if it weren't for him, they wouldn't be able to use the radio to get in touch with other people, and the red hair, holding the life and death of the entire new city, they are all non-combat abilities, but they all play a great role!

In addition, now with the deepening of research, the application of fire drills in other aspects, not to mention, fire drills have a strong energy, after the development of energy conversion devices, the power supply of Xincheng Chang has been solved, and more things can be done with electricity, and later relying on the various items invented by fire drill energy, the most representative Tianfu aircraft, if put into use in batches, will greatly increase the mobility of personnel, and is currently studying the suspension of the aircraft

Floating technology is applied to automobiles, as long as the hovering car comes out, those cracks in the ground will no longer be an obstacle to traffic, and there is no need to build bridges in order to ensure road conditions. Not to mention energy weapons, which can make everyone a combat force against zombies and mutated creatures, although it is not perfect, but the power is undoubted.

Bai Qi smiled and said, "Don't bother with these small pieces of rough stones, I see a lot of big ones below, the largest ones weigh several tons, even if we can't take the biggest ones, it's better than digging these small ones one by one." I'll bring some more baselines for bundling, and I'll see how much I can drag when I'm flying at full strength. ”

"No problem, I deliberately prepared a lot of baselines."

"What's the depth now?" Bai Qi asked.

Sun Jian immediately ran to the platform to check, "33 kilometers, two kilometers more than you did last time." ”

"Will the Gecko be able to continue diving?"

"The siren has already indicated the limit...... It should be okay to force the dive, but I'm afraid that if something really goes wrong, we won't be able to take anything back......"

"Alright then, that's it for now. Let's go, let's go down. "Bai Qi has almost recovered, the energy here is abundant, take a little rest, and cooperate with the breathing method taught to him by Lao Zhang, you can recover your energy consumption.

The two of them were lucky enough to leave the Gecko with two bags made of baselines.

In order to save energy, Bai Qi did not fly directly, but climbed with Sun Jian, and it was much easier to go down, find a foothold, shuttle and jump back and forth, and the speed was not slow.

"Boss, didn't you say you met terrible creatures underground last time?" Sun Jian asked curiously.

Bai nodded, "Yes, I don't see what it is, but what is certain is that it is definitely not small, and I still remember the roar that made my soul tremble." ”

Sun Jian said, "The underground has always been unexplored by human beings, everything is scanned with existing technology, after getting the data, a bunch of scientists follow the students to speculate, we are really people who have entered the underground, it stands to reason that our depth has exceeded the average depth of the earth's crust, and the so-called magma layer does not exist." ”

"Actually, there must be a magma layer, otherwise what are those volcanoes erupting? It's just that the magma layers may not be evenly distributed, and it is possible that there are some places and some places do not. It's just that the arguments that infer that there are no living things underground are absolutely not credible. How big is the world, and we humans are only one of the species, and we have not set foot in the underground to infer that there is no life? Anyway, I don't approve of it, maybe there are creatures that like this environment, but humans haven't discovered it. The last time we met, I suspected it was an underground creature. We all know that the energy of the fire diamond will attract zombies and mutated creatures, so there are so many fire diamonds in the ground, why don't they come and ask for it? High temperatures are a hindrance

But those high-level zombies and mutated creatures should be able to overcome it. I've been thinking about this since I went back last time, and the reason why they don't pay attention to the underground fire drill is fear, the fear of underground creatures. Bai Qi said what he thought.

Sun Jian couldn't help but feel a chill in his back, "Boss, my cold hair stands on end when I hear what you say, haha!" Hurry up and scavenge and retreat. ”

Soon came to the place where Bai Qi had obtained the fire diamond before.

Sun Jian looked at the fire drill that was a few meters away, and he picked up the bag compiled by the baseline and began to dig.

Bai Qi didn't hesitate and started to move, but he was more curious about the deeper below, so he moved down the cliff while digging the fire drill.

After a while, Sun Jian filled two bags of fire diamonds, and tied a few rough stones with a diameter of about one meter with a baseline, wrapped around his waist, and felt that the weight was about the same, so he said hello to Bai Qi and sent this batch back to the Gecko first.

When Sun Jian climbed up, the mechanical arm played a particularly big role, the palm went up more than 20 meters, clasped the cliff, and then contracted, pulling Sun Jian up directly, which is completely a fully automatic climbing tool, much easier to use than a grappling hook and a flying cable. The main thing is that it doesn't consume any energy, a little bit of energy can maintain the operation of the mechanical arm, and I have to sigh at the power of the ability of the gods, such as the mechanical arm can manifest itself, if there is enough energy, he will not go against the sky......

Bai Qi slowly and leisurely carried out the search work, intentionally, and went a few hundred meters deeper, and speculated that the current depth should be close to 38 kilometers.

At such a depth, even if it is protected by a protective shield, Bai Qi can still feel a large amount, and sweat flows out unconsciously, which is not important. Bai Qi discovered a lot of new things.

There are fewer fire drills, but I didn't find that all of them are bigger, and the largest one is about the same size as the palm of his hand, according to their division of fire drills, it is estimated that it can be rated as level 10......

This is not the end, what is more noteworthy is that in addition to those special metal rough stones, there is a mineral with an extremely similar color, but the color of dark green is more profound, and the energy injected by Bai Qi is tentative, and the conduction is stronger than that of his dagger! This has to surprise Bai Qi, what does this mean? Illustrate that you can forge more powerful blades!

The two pockets were already full, and Bai Qi had to poke out his tentacles again to grab these pieces of high-grade rough stones the size of ordinary car tires.

Placing the endless abyss below, Bai Qi concluded that there were countless secrets worth exploring in the depths of the ground, and now there were high-grade rough stones and large fire diamonds, and if they continued to go deeper, they might even find the giant fire diamond that Ye Qi and they had at the beginning. Even if you can't take the giant fire diamond out because of the danger it causes, what about a mineral that is more powerful than a high-grade rough stone? With stronger weapons, you can increase your combat power and slash stronger enemies.

I can't take more things, Bai Qi forcibly controlled the ** who wants to continue to explore, this time the task is to obtain a sufficient amount of special metal rough stones, increase the production of energy weapons, forge more blades, and strengthen everyone's combat power, these fire diamonds are already unexpected surprises, or focus on the current task, after all, into the fruit to continue to explore, there may be any unknown situation, figure out the key, and start to climb up quickly. At the same time, I made up my mind that if I have the opportunity in the future, I must definitely see how many secrets are hidden in this underground.

On the way back, he met Sun Jian, who had come down for the second time, and when he saw that Bai Qi was carrying a large fire diamond, his eyes were about to pop out, and he asked for the specific location, so he rushed down directly, and he had to pack two bags of such large fire diamonds. Sun Jian was very aware of the situation in Xincheng, and such a large fire diamond was even more useful, and it must be as much as possible, so he couldn't help but be excited.