Preface:

Heavy water: is a compound composed of deuterium and oxygen. Pen? Interesting? Pavilion wWw. ｂiquge。 The Info molecular formula D2O, the relative molecular weight is 20.0275, which is about 11% higher than the relative molecular weight of water (H2O) of 18.0153, so it is called heavy water. In natural water, the content of heavy water accounts for about 0.02%. Since the properties of deuterium and hydrogen differ very little, heavy water and ordinary water are also similar. The ion product of heavy water is 1.6*10-15. Heavy water (or deuterated water, chemical formula D2O or 2H2O) is a type of water that is heavier in mass than ordinary water. Ordinary water (H2O) is composed of two hydrogen atoms with only protons and one oxygen 16 atom, but the two hydrogen isotopes in the heavy water molecule have one neutron each more than the ordinary hydrogen atom, so the mass of the heavy water molecule is heavier than that of ordinary water. In nature, heavy water is found in very little amount.

Luo Yun followed Li Chunfeng to the end of the corridor of the Ministry of Science and Technology, and saw a purple door engraved with the three big characters "Black Water Pool", presumably this is the cultivation place with a water environment that Li Chunfeng said.

Li Chunfeng was the first to step into the purple space door, and Luo Yun hurriedly followed.

The first imprint into Luo Yun's eye socket is a 50-acre size pond, the pond is surrounded by stones of different sizes, these stones enclose the pond into a circle, the surface of this pond not only does not see any traces of water flow at all and there are no bubbles, but in the middle of the pond there is a very conspicuous black flower bone, this budding black flower bone is tightly embraced by two black leaves, as if it will bloom at any time, The most interesting thing is that the water in this pond is actually jet black, looking down at the bottom of the pond is also a black oppression, I can't see how deep this pond is, and the surrounding area of the pond is full of all kinds of strange aquatic plants, these aquatic plants are also black.

Seeing this scene in front of me, the name "Black Water Pool" really lives up to its name.

"This is the Black Pool!"

Li Chunfeng walked to the side of the pond and pointed to the pool of black water and said.

"The first chapter of the dictionary should have been introduced, the ghost world only has a very rare light water like the human world, this pond is composed of 98% heavy water and a small number of minerals, heavy water is more harsh than light water, but the water will contain more energy so it will appear black."

It turns out that the black water in this pond is heavy water, but according to what Luo Yun has learned, heavy water is poisonous, and if he accidentally gets a little bit of it, his life will be lost.

Seeing Luo Yun's worries, Li Chunfeng continued: "Don't worry, kid, didn't the old man say that your current body can be regarded as a superhuman after being imprinted by the soul, and the toxicity in this heavy water is almost negligible to you. ”

Luo Yun breathed a sigh of relief when he heard Li Chunfeng say this, and asked, "Master! So where do we start cultivating? ”

"Walk!" Li Chunfeng touched his beard and said.

Walking is a piece of cake for Luo Yun, such a small pond in the human world can almost walk around 10 laps without much effort. But things were never as simple as he thought.

When he was still stunned. Li Chunfeng had already come to his side, clamped Luo Yun's neck with his jet-black hands, picked up Luo Yun's whole person, and then took off the red running shoes that Hei Wuchang lent him, and finally threw him into the pond with a forceful throw.

With a "plop" and a splash of water. Luo Yun was thrown directly into the pond, it seems that Li Chunfeng is always so simple and rude.

Luo Yun, who fell into the pond coldly, was choked with a mouthful of water, and his body began to sink rapidly, he quickly swung his feet to hit the water while his hands kept paddling upward, but after a while, he really felt the reason why heavy water is called heavy water, the density of this heavy water is extremely high, and people have no buoyancy in it at all, just like being hung on an iron anchor on a ship and sinking straight down, if it weren't for Luo Yun's desperate paddling, I am afraid that he would have sunk to the bottom of the pond long ago.

Luo Yun paddled hard to keep it from falling, and shouted, "Master! I'm running out of energy, save me! ”

"Shout what to shout! It's part of the practice, you start by saying it for 5 minutes. ”

Li Chunfeng stood on the shore and said unhurriedly while looking at the time on the Spirit Realm.

。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。

Five minutes later. The panting Luo Yun was dragged ashore by Li Chunfeng, looking at Luo Yun, who was wet and embarrassed, Li Chunfeng seemed to have a feeling of revenge.

"What a boy! The old man didn't lie to you, this water is not poisonous! ”

"You old immortal, inhumane communiqué personal vendetta." Luo Yun almost scolded, but he held back, after all, he didn't know what tricks this blind man would use to fix him, and it was his best choice to endure the calm for a while.

"Master! The water is so terrifying that it's hard to even think about floating, let alone swimming, it's impossible! ”

"Impossible, huh!"

Li Chunfeng snorted heavily, his knees were slightly bent, his feet jumped backwards and jumped into the pond, and without making the sound of the soles of his feet touching the water surface, after jumping into the pond, Li Chunfeng's feet stood directly next to the water surface, and then he put his hands behind his back and walked along the pond easily.

"Boy, if you want to walk on the water, you need to release the right amount of water energy to cover your feet, the characteristic of water energy is that it can change the gravitational potential energy of water, when the gravitational potential energy of water increases, the buoyancy of the water will increase, and the increased buoyancy can support you to stand on the water." Li Chunfeng finally ran on the water.

"But there is a prerequisite for this, that is, you must first learn to absorb water energy, and only after your spirit has stored a certain amount of water energy, you can release energy, as long as you master the essentials of absorbing and releasing water energy, then it is easy for you to absorb and release energy from the coin."

"The first thing I need to do is to learn how to absorb water energy, but how do I do that?" Luo Yun asked puzzled.

"This depends on the individual's talent, the word "enlightenment", some ghosts are very willing to only need 1 year to realize the trick, and some are likely to take 10 years to achieve enlightenment. ”

"Another thing you have to remember is that the balance between absorbing and releasing energy is very important, although it is necessary to generate enough buoyancy by releasing energy, but at the same time you need to constantly replenish energy in the water, otherwise even if you can release energy but cannot absorb energy, the lack of energy will make it impossible for you to stay in the water for more than 5 minutes."

"In order to allow you to quickly convert between absorbing and releasing energy, the old man chose here for you to cultivate, there are two benefits of cultivation here, one is that you can only be in the environment of water and matter, you can better feel the flow of energy in the meridians, and the other is to let you put yourself in the place of death and then live, people will stimulate their own instincts in the case of near death, so that they can better enlighten, this is also the fastest way, there is no more than a month to take the ghost arbitration exam, If you can't control the meridians within seven days, the inertial rotation of the spirit vortex will stop on its own, then everything we've done before will be useless! ”

Li Chunfeng said sternly, and at the same time jumped in front of Luo Yun with a light cushion of his foot on the water.

"Seven days!" It seems that I'm going to be desperate again, and everything I've done since I came to the ghost world is desperate, and it's not easy to survive!

"Seven days, remember that you only have seven days, after seven days you can at least walk more than ten laps on the water to be considered successful, the theoretical knowledge that should be taught to you has been taught, the rest depends on your own understanding and willingness to work hard, if I find that you still haven't grown up after seven days, the old man is too lazy to teach you, the old man will personally destroy your spirit body."

"And! No one will bring you food these days, as long as you learn to absorb energy, you don't need human food. ”

After dropping these vicious words, Li Chunfeng took out a clock and threw it into the sky, and the clock hung in the air.

"Looking at this time, it's July 17th, and seven days later, the old man will come back on July 24th."

"Boy! In order to cultivate effectively, it is important to remember that the balance between absorbing and releasing energy is very important... After speaking, Li Chunfeng turned around and left.

Luo Yun smiled bitterly and shook his head, he didn't eat or drink for seven days, even if he didn't drown, he would starve to death, it seemed that he could only break the kettle and let it go.

Luo Yun looked at the dark pond in front of him, this time he didn't need Li Chunfeng's urging, he mustered up the courage to walk into the water step by step, when the water level was almost to his chin, he stopped, and thought carefully, since he needs to cultivate the method of releasing and absorbing energy, then there is no doubt that he will first cultivate to absorb energy, as long as he can absorb energy through the water, then he doesn't need any oxygen, then he doesn't have to sink into the water because he is afraid of not enough oxygen, In this way, you can ensure that you will not starve to death in seven days, and at the same time, you will have enough energy to practice walking in heavy water.

Luo Yun took a deep breath, closed his eyes, and buried his head in the water, the oxygen in the heavy water was consumed quickly, and soon Luo Yun felt that the oxygen was not enough, but he still insisted on burying his head under the water, and large bubbles kept spitting out of his mouth.

Luo Yun's chest rose and fell violently, this was much more difficult than he imagined, he could feel that the spirit body basically had no reaction, did he really have to be put to death like Li Chunfeng to succeed?

"People are forced out! It seems that you can only put yourself in a life-threatening situation and inspire yourself to become enlightened. ”

After having this idea, Luo Yun continued to walk towards the deep water area of the pond, and after a while, the water overflowed over his head, Luo Yun continued to walk forward with difficulty underwater, the resistance of the heavy water was extremely great, and he needed to consume a lot of physical strength for every step, not to mention that he was still unable to breathe, but he decided to force himself.

After reaching a depth that he couldn't even reach his feet, Luo Yun simply put his hands behind his back and let himself sink into the water, now his whole person is soaked underwater, time passes quickly every second, the expression on Luo Yun's face becomes more and more pale, and the powerlessness brought by the lack of oxygen He began to feel extremely fearful, there was not even a little air in his lungs, but now he couldn't turn back, he sank too deep, and he couldn't even use a trace of strength.

Death or survival has reached the most critical moment!

(On July 17, 2016, Luo Yun entered the Black Water Pool to cultivate and entered a near-death state)

Preview of the next section: Mystery Man?

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