Nie Ya muttered involuntarily, "What if it's an instant? What happens in an instant? I really can't think of it, why don't I ask Master tomorrow, or ask Father, in short, I must know ......"

Wanting to fall asleep with doubts was undoubtedly even more difficult for Nie Ya, and he woke up four or five times overnight. It's still pitch black outside, and he's afraid he doesn't know yet......

As soon as the day dawned, he hurriedly got dressed, in fact, he didn't sleep much all night, and he was unwilling to ask if he understood.

Bai Xiaoyun heard movement in the outhouse, so he also got up early, he still had to cook anyway. As soon as she pushed the door, she saw that Nie Ya had cleaned up neatly, but she didn't know what it was for, so she hurriedly asked, "Why did you get up so early? ”

"Mother, you got up so early! I don't know anything about it, and I want to ask Master. ”

"Hey, so early, you go, people don't necessarily get up, if you have any questions, you can also ask your father and me, how much more experience than you. ”

"Oh, that's right, I wonder what would happen if you threw an extremely hot fire into cold water in an instant. ”

Bai Xiaoyun couldn't help but feel funny, "Hehe, what a stupid child, water and fire are incompatible, if you put the fire in the water, it will naturally be extinguished!

Nie Yan scratched his head, feeling that what his mother said didn't seem to be right, and said, "If it is put in in an instant, in an instant, what will happen?"

Bai Xiaoyun didn't think much about it, and said with a smile: "It's extinguished in an instant! What a stupid son, ...... still have to ask."

Nie Ya returned to the room in disappointment, leaning on the edge of the bed and sighing. Suddenly, Bai Xiaoyun and Xianggong burned the fire to cook, a raging fire was lit under the stove, although Nie Ya was in the room, he could still hear the crackling sound like firecrackers when the firewood was burning, and couldn't help but run out to watch, "Mother, what kind of noise is this?"

Bai Xiaoyun said with a smile: "This is the sound of firewood, because this firewood is not dry and there is water in it, so it sounds." ”

"Why does it sound when there's water inside?" asked Nie Ya, still chasing after him.

Nie Wushuang said: "Where are you squatting, burn the fire for a while, and you will understand why it sounds." ”

Nie Ya crouched beside the stove and filled in a few pieces of wood underneath. The firewood is not dry, and when it is burned, some water will seep out of it, and make a sizzling sound, and after a while the fire will burn vigorously, and there will be a lot of red coals underneath.

When the meal was almost done, Nie Wushuang asked Nie Yan, "How is it?"

Nie Ya shook his head, and stuffed a piece of wet wood into it, and the wood was inserted into the red coal, and it didn't take long to hear a snap, and with that sound, the red coals exploded in all directions, and a piece actually fell on Nie Ya's hand, and he quickly shook his hand in pain and shook the coals to the ground.

Nie Wushuang said with a smile: "Because the wood contains water, and the temperature of the red charcoal below is extremely high, you insert the wood underneath, and the charcoal conducts its own temperature to the wood, and the moisture in the wood expands rapidly when heated, but it is surrounded by solid wood or charcoal, and there is no more space at all, so it can only desperately compete for space until it finally explodes." ”

Nie Ya looked at his father and asked, "Then why put it on top of the flame, it will only make a sizzling sound, but it will not explode?"

Nie Wushuang said with a smile: "Because the temperature on the periphery of the flame is not as high as the temperature in the center of the red fire coal, it is not heated quickly enough, and it is on it, the expanding moisture is easy to overflow the wood itself, when the water overflows, it will quickly boil and evaporate into air, and disperse to the surrounding areas, so that the heat will be dispersed with the accumulation, and it will not be enough to form an explosion, do you understand?"

Nie Ya nodded, and a train of thought quickly smoothed out. Last night's two problems were solved in an instant. The explosion of firewood is like throwing an extremely cold ice cube into the middle of an extremely hot fire in an instant.

Due to the instantaneous increase in temperature, the ice will quickly melt into water, and then rapidly expand, boil, vaporize, and even skip the intermediate process and vaporize directly.

At first, the surrounding fire will suppress it and squeeze it firmly in the middle, but as more and more moisture is vaporized, the pressure and accumulated energy will not continue to increase, until the fire outside cannot suppress the gas in the middle, and the explosion will occur. And from the moment the ice is on fire to the final explosion, the whole process is only a moment.

Through this line of thought, Nie Ya quickly thought of the former, which was to throw the fire into the middle of the icy water in an instant. Although the fire will be extinguished by water, it will still release a large amount of heat before it is extinguished, and if the fire is hot enough, it will vaporize all the water near it in an instant.

Then, for these gases, the surrounding water becomes a barrier that prevents them from spreading, as long as there are enough of these gases, and the accumulated energy is large enough that before these energies can be transferred to the surrounding water, they have broken through the water barrier, and an explosion is formed, or it can be called a burst.

"I see," Nie Ya jumped excitedly, .......

Nie Wushuang smiled, "It's good to understand, let's eat quickly!"

Nie Ya grabbed his father's hand and said excitedly, "Extremely cold ice will explode when it is put into extremely hot fire, and extremely hot fire will burst when it is put into extremely cold water, I understand father, haha......"

Nie Wushuang shook his head helplessly, after all, he still couldn't understand why his son would say these strange things.

In order to verify his conjecture, and in order not to be blamed by his father like the day before. Nie Ya lit a fire early in the evening to cook, and while cooking on the fire, he observed the law of firewood explosion, and sure enough, ...... At least now he can prove one thing, that is, if he directly cultivates the Sun Essence after sucking Yuehua, he will die in an instant.

Nie Wushuang and Bai Xiaoyun, who saw the cooking smoke, were very satisfied, and although the food was not very good, they still praised it.

When the night was quiet, Nie Ya began to meditate again, he wanted to know how to cultivate the Sun Essence. Simply sucking Yuehua is obviously incorrect, although it can nourish, but compared with the same eclipse day Jingyuehua, the speed of refinement will be more than twice as slow.

At the most difficult time, the two voices in his head sounded again, and they asked and answered, miraculously explaining the doubts in Nie Ya's heart.

Absorbing the essence of the sun is eating yin, and the lack of yin in yang is extremely precious. Spring rain is as precious as oil, and this yang and yin are even more rare.

To obtain the essence of the sun, you must first obtain the sun in the moon, otherwise people will die of exhaustion. But if you don't get the sun in the middle of the moon, you can immediately cultivate the essence of the sun, and if you get the two at the same time, then the yin and yang will gather in one place, and people will definitely die. Therefore, it is necessary to obtain the moon flower, and then take the day essence after a period of time.

Depending on the depth of practice, the interval is different. The higher the depth, the longer the interval will be.

Nie Ya had just stepped into this door, and he gave himself a tentative time of three days, and at noon three days later, he climbed to the roof, sat cross-legged facing south, and his mind entered the realm of selflessness.

But when he wanted to enter the next realm, he ran into trouble again, and it seemed wrong to do it everywhere, but what should he think?

Nie Ya is anxious like an ant on a hot pot, only relying on this heavy realm to absorb the essence of the sun, obviously slow, he is not willing to let himself be so grinding, but the two little people in his head don't tell him, he has no choice, so he has to pin his hope on the night again.

Midnight did not disappoint him, and the two voices involuntarily thought of a sentence, "The heart is black, the water body is the prison, and the yang bends into the lungs and blood is the ......."

The next day, Nie Ya climbed onto the roof again, sat cross-legged, looked at the sun, and then slowly closed his eyes, first into a state of self-forgetfulness, and then into a state of self-forgetfulness, thinking that his heart was made of black water, beating and jumping, driving the blood veins of the whole body, and the blood was also black water, like ink walking in the blood vessels of the whole body, like a black cage, there was no body, no bones.

Finally, thinking that the sunlight bent into his lungs, through the black veins, connected to the heart of the black water, slowly combined.

The perfect combination of Rijing and Yuehua in his body, that feeling made him speechless, if he had to describe it, I am afraid there is only one word "cool".

"It's wonderful...... Nie Ya was so excited that his heart was pounding, and the more he beat violently, the more comfortable it became, so comfortable that he had to open his eyes to stare at the sun.

Unlike smoking the moon, he could feel more clearly that his heart was connecting with the sun. Perfection is almost suffocating him, and he can look directly at the sun without feeling dazzling.

He could clearly see the dark spots on the sun, and he could clearly see that every ray of light emitted by the sun was bent towards him, and his shadow was on the entire roof, and this whole sunlight was taken away by him alone......

The sun had already set, but he still sat motionless on the roof, reminiscing about the wonderful feeling of being connected to the sun.

Nie Wushuang, who pushed open the door, saw that his son was sitting on the roof, and there was no smoke rising slowly in the chimney, so he was angry on the spot, and roared the horses a few times, but it was difficult to vent the anger in his heart, and he couldn't help but start to reprimand Nie Yan again.

The ecstatic Nie Ya wanted to tell his parents about his cultivation experience, but how could they believe what a child said?

The two of them glanced at each other, both with disappointed expressions, Nie Wushuang scolded Nie Ya and complained that he didn't cook dinner, while secretly thinking in his heart, "If he dares to talk back again, find a reason to cut him ......"

But today's Nie Yan is completely different, he has learned how to suck the essence of the sun, he is full of joy, Nie Wushuang's reproach is obviously not enough to make him a little unhappy.

Nie Ya broke a wooden stick, used the stick as a knife, and began to practice in the courtyard again, this time he made Nie Wushuang nod frequently, "Fortunately, you haven't forgotten our family's knife technique, otherwise I won't spare ......"