Beauty's Personal Physician

Rock cracks, faults, or natural grottoes and caves may form areas where water bodies are emptied.

If you are lucky, you can even find karst caves and tunnels leading to the outside world from those places. This is the hope of life.

In fact, there is also hope in the water. The earth's crust is by no means airtight, and the water holes that can be seen from the outside must have cracks leading directly to the aquifer.

The only uncomfortable thing is that most of those cracks are too thin and narrow to accommodate an adult's body to drill out. It takes some luck to get rock formation tunnels, cracks, and caves that are really big enough.

"Your idea is very clever, but there is one thing that you don't seem to have considered thoroughly. Even if we find a space in the underground rock formation that is not filled with water, unless there is a crack in that place to communicate with the outside world, there will be no air for us. Breathe." Ye Shenyu thought for a while, then couldn't help shaking her head.

This guy thought of the most sensible step in a desperate situation, but this kind of thinking seems to be inherently flawed.

If the rock space at the bottom of the water is isolated from the outside world, there should be no nourishment for breathing.

If you are unlucky, the grotto that may even pop out is filled with methane and natural gas.

"Hehe, you are right to worry, but I have a solution. There is no oxygen, so let's make oxygen to breathe. The key is to find the area where the water is drained. It doesn't need to be too big, a few cubic meters is enough." Yang Dee laughed.

"To make oxygen?" Ye Shenyu was surprised, "What is used to make it?"

"Water." Yang Di said.

"You want to use electrolysis?" Ye Shenyu felt inconceivable, this guy really thought of a powerful and unconstrained style, in such a dark and desperate situation, he could think of a way to create a chance to breathe.

"That's right." Yang Di admitted.

"Do you know the spell of thunder and lightning?"

"Yes! Although it's not too strong, the electrolyzed water is more than enough."

"Then it seems that we really still have a chance to survive the desperate situation." Ye Shenyu sighed, and couldn't help a little admiring this guy, who could even think of such a way.

How to breathe is the most severe survival challenge the two of them are currently facing. Even if they are strong in the evil spirit realm, they can hold their breath for at most three to five days if they have enough true energy.

This is almost the limit. If the limit is exceeded, the monk will also be dizzy. At that time, the god of death will come to the door.

Of course, there is no need to worry about being thirsty at the bottom of the water. There is fresh water all around. As for being hungry, it is better. Even if you don’t take pills, with the cultivation base of the two, you can go hungry for a month.

Of course, if you are really hungry for a month, you will be almost skinny and limp...

……

This kind of drifting in the dark, lonely and depressing, the senses are immersed in the cold darkness for a long time, and even the heart will cool down.

Yang Di and Ye Shenyu should really be thankful to have each other right now, the water flow is slow, and the surroundings are dark and quiet, as if they have been exiled to the edge of the universe. Without a partner, no one can really stand it, because all Everything in this world is unknown and dark, and I don't know where it will drift.

Perhaps it is precisely because of each other's support that this kind of quiet drifting is boring, but both of them are extremely patient.

In the underground water layer where you can't see your fingers, there is also no concept of time, and you can only figure it out with your consciousness.

The two of Yang Di felt as if they had been drifting for more than two days. Gradually, the water flow around them became slower and slower, and the water pressure did not increase too significantly.

This means that they have entered the bottom of this underground water area, which is estimated to be very deep from the ground.

The nearby hydrology and geography are very complicated. If you probe out your spiritual consciousness, you can detect many criss-crossing caves, caves, and stalactites.

But those grottoes and karst caves are almost all filled with stagnant water, which cannot meet the conditions of the two of them.

"Go! Let's look in that direction." Ye Shenyu felt it for a long time, took Yang Di's hand, and swam towards a direction in the darkness.

Since the current of the water is very slow now and there is no big fluctuation, if their limbs do not move, they will be almost stationary at the bottom of the water.

Of course not, staying at the bottom of the dry water is tantamount to waiting for death, the current stopped, and they had to swim by themselves to find a place where they could take a few breaths.

After more than half an hour, after swimming for several kilometers in this underground water area, Ye Shenyu finally sensed an empty area nearby, and went away with her spiritual sense, just like a big bubble in the underwater world.

It was probably a cave.

Both of them were pleasantly surprised, and then they swam quickly, and after a while, they touched the entrance of an underwater tunnel.

The inside of this tunnel has already been filled, but Ye Shenyu's keen spiritual sense can feel that there is a space above the end of the tunnel at a depth of tens of meters, which should be filled with a lot of natural gas and methane, so A small cave was emptied out.

thump!thump!

When they came to the end of the tunnel, the two stepped up, and soon they really emerged from the bottom of the water.

The curved end of the tunnel was not wide, and the two of them seemed to emerge from an ancient well. There was really something special here.

"Leap up!"

Yang Di was excited to transmit the sound, the wet rock wall was very smooth, but fortunately, both of them were monks, and as soon as they stepped on the energy, they jumped from the water to the entrance of the cave with a height of more than three meters.

After getting into the entrance of the cave, Yang Di and Ye Shenyu were surprised to find that the inside of the cave is very large, enough space for an apartment, and there are many stalactites hanging around, dripping water.

But the two were not in a hurry to open their mouths to breathe. As they had guessed before, this natural cave was dark and humid, with almost no oxygen, but filled with very thick methane.

Methane is colorless, odorless, and non-toxic, but it cannot be breathed, so after entering this empty cave in the underground water area, except for getting rid of being soaked in water, nothing has actually changed. It is still the same cold and damp, and it cannot be breathed!

To make matters worse, after the surprise, Yang Di suddenly had the urge to curse.

The karst cave is very large, so there is plenty of room for them to move around, so they don't have to squeeze into a small place.

But this kind of problem also arises, because the space is too large, it is very difficult to produce oxygen. It is estimated that even if Yang Di uses Xiao Wuji Thunderbolt Hand to release the electric light until he is exhausted, his arms are convulsed, and the oxygen produced by electrolysis will be exhausted. Can't fill this big cave.

Moreover, once oxygen is produced, the invisible thick methane around becomes a time bomb, and any spark will be a sea of ​​flames.

This stumped Yang Di.

"It seems that we are in trouble." In the darkness, Yang Di ignited a fire of true energy between his fingers, illuminating the surroundings, and shook his head helplessly at Ye Shenyu.

Now that there is no oxygen around, even if a fire is forced out, the methane will not be detonated.