That's the air underground!

That's right, the deeper the mine goes underground, the thinner and thinner the air in the mine will become, and even at the depth they were at that time, human beings would already feel suffocated, and if they were in that oxygen deficiency environment for a long time, within ten minutes, they would faint and coma due to insufficient oxygen supply to the brain. Pen, fun, pavilion www. biquge。 info

They had stopped more than 400 floors underground because of this problem, and they had to start digging around, otherwise if they went deeper, they might not be able to hold out in that environment for five minutes.

Even so, they need to dig for more than ten minutes to walk to a higher position to breathe fresh air, and sometimes even have to go to the surface to relieve the symptoms of lack of oxygen, so they need to go up and down all the time, and the efficiency of mining is naturally much reduced.

However, in order to dig up more and rarer minerals, they had to go deeper into the ground......

Because, the previous people's large-scale mining of underground minerals led to the fact that the closer to the surface, the less likely the occurrence of minerals, and the more barren the minerals, those guys are like crazy people who mine minerals layer by layer, and those who are close to the surface are gone, and then mine deeper ......

This also leads to the fact that if you want to dig more and more precious minerals, you have to dig deeper and deeper, after all, it is difficult for those guys' hands to reach so deep, and the deeper the terrain, the richer the mineral reserves.

However, because of the lack of oxygen, it is impossible for them to continue to go deeper, and the mineral reserves of more than 400 layers of the ground are indeed much richer than those of more than 200 layers, but for them...... This is not enough.

What's more, diamonds and emeralds may be a precious mineral that can only be dug in deeper places, if they don't have diamonds, then they can't make many things, and they can't complete it through enchantment and the like, even if they are not in a hurry about enchantment now, but they will definitely need an enchantment table to improve their combat effectiveness in the future, compared with enchanted and unenchanted equipment, the combat power can be increased by more than one or two times.

So what to do? Do you want to continue mining more than 400 floors now, and think about the diamonds and enchantments later, or do you want to find a way to continue going deep into the ground now?

After some discussion, the two decided to try to find a way to solve this problem now, because this problem will be solved sooner or later, and it is better to do it now than in the future, because they urgently need more and more precious minerals to strengthen themselves and complete the task.

The second is that if they solve this problem earlier, then the time for them to dig up the diamond may be one point earlier, whether the enchantment is enchanted or not is absolutely impossible to ignore the change in combat effectiveness, a full set of diamond equipment for protection three and ordinary diamond suits, the difference in protection ability is at least more than doubled.

Getting the diamond earlier means that they can make an enchantment table sooner and enchant equipment earlier to improve their combat effectiveness, which is not a bad thing.

However, no matter what they thought about and put forward, even if they used less than a set of redstone to make railroad tracks to speed up their progress up and down, it was only to no avail, at most they would go deep into the ground close to five hundred, and at the same time have to endure the severe suffocation and ...... caused by ultra-low oxygen

The ravages of the minecart on their soft buttocks.

However, just when they were like ants on a hot pot, racking their brains and even thinking about this matter day and night, but still couldn't come up with any way, and finally wanted to give up, the solution suddenly appeared logically......

It can be said that "there is no place to find the iron shoes, and it takes no effort to get it." ”

The solution was the reward for one of the tasks they were working on at the time, the Rose Bush.

Originally, the quest rewarded the rose bush to let them ease their minds and sober their minds, because in the battle with zombies, human beings will often be affected by corpse gas, such as nausea, delirium, and even hallucinations.

At first, they only put it as an ornament at the door of their home, or occasionally bring it on their bodies, and the fragrance of roses can always cultivate their sentiments and relax their mood.

However, by some coincidence, they happened to carry the rose bush with them, and they were attacked by zombies in the 400-story mine tunnel because the light was too low.

Originally, with their physique, they would not be affected by the zombie qi - only the aborigines of this world would be affected, even in the battle of the blood moon, they had never been dizzy because of the corpse qi when they fought with so many monsters in the undead tide.

However, perhaps because the oxygen concentration in the air on the 400th floor was too low, they would have nausea and discomfort after staying in that environment for a long time, and they fought with the zombies there, and finally suffered some effects, and after the battle, both of them felt dizzy and even weak.

When they finally thought of the rose bush, and were about to take it out to relieve their symptoms, and slowly walk back to the earth, the unexpected happened—they suddenly felt that the air in the entire mine was much fresher in an instant, and the oxygen concentration was slowly rising at an equilibrium rate, and even had the same tendency as the air on the ground!

They were wondering why this was happening, but they accidentally found that the rose bush they were holding in their hands was gently opening and closing, and that feeling, as if the rose bush, like humans, could breathe!

It was then that they finally realized that it was all caused by the rose bush - and it was this rose bush that they relied on to go deeper into the earth!

Yes, roses also need to breathe, but unlike humans, human breathing is to inhale oxygen and spit out impurities; The rose bush inhales impurities and exhales oxygen! It's equivalent to a continuous stream of air purification devices! And it's absolutely natural, it doesn't require any mechanical energy to function!

In this way, as long as there is a rose bush, then the rate at which they inhale oxygen and the rate at which the rose bush releases oxygen is almost balanced, and even faster, that is, they finally really have the capital to go deeper underground!

No matter how deep they go underground, as long as there are roses, it is not a problem for the air to be thin, even if it is a thousand floors, they can go there!