The interior of Ice and Fire Cave is much more spacious than it looks from the outside.
After entering, there is a short corridor, with moonstones for lighting embedded on the walls on both sides, the light is cool. At the end of the corridor is a reception room, a woman wearing Ice and Snow Pavilion clothing is sitting behind the counter, Foundation Establishment Middle Stage is holding a book and flipping through it. Wind and Snow Pass Such facilities are basically under the control of the Ice and Snow Pavilion
"Lease or long-term training?" The woman didn't even raise her head.
"Rent." Qin Tiexin said, "One ice room and one fire room, right next to each other."
The woman then raised her head and glanced at him, her eyes sweeping over him. "Body Tempering How many floors are you on?"
"Eighth level peak, prepare Marrow Replacement."
The woman nodded, with no expression on her face. She was obviously used to this kind of situation. "The ice room is adjacent to No. 3 and 4, and the fire room is also adjacent. Twenty points of merit a day will be charged on a daily basis. If it is less than one day, it will be calculated on a daily basis. How many days will it be rented?"
"Rent for ten days first."
The old man took out a jade token and handed it to him. "This is the key. You can open the door by injecting spiritual power. The access control of the ice room and the fire room are on this. The rules are very simple - don't damage the facilities. The door will be automatically locked after timeout. If you need anything, please contact the patrolling disciple outside."
"Okay." Qin Tiexin took the jade token and crossed two hundred points of merit.
The layout of Ice and Fire Cave is in the shape of a "back", with a circular corridor in the center and large and small training rooms arranged on both sides. The ice room and fire room are staggered. The door of the ice room is made of Heaviness's black ice, with hoarfrost condensing on the surface; the door of the fire room is made of dark red metal, which is slightly hot to the touch.
Number three in C is the ice room, and number four is the fire room, which happen to be adjacent to each other.
Qin Tiexin opened the ice room door first.
A stream of extremely cold air blew towards the face, and the temperature was much lower than Wind and Snow Pass the outdoor temperature. The indoor area was about two feet square, and the walls, floor, and ceiling were all made of a thick layer of black ice with a light blue luster. There were no extraneous furnishings. There was a small pool in the corner, with crystal clear water and the slightest trace of Cold Qi--it was a directly introduced living water ice spring.
He exhaled a breath, and the white mist instantly condensed into fine ice crystals, falling rustlingly.
He exited the ice room and opened the door of the fire room next door.
A wave of scorching hot air instantly enveloped him, as if he had been plunged into a furnace. The size of the fire room was similar to that of an ice room, but there was a fire port in the center of the ground that was directly connected to the earth's fire veins. The red fire light reflected through the iron fence, roasting the entire stone room like a steamer. The walls were smoked dark red and felt hot to the touch. There was a dry smell in the air.
There is only a stone wall between the ice room and the fire room.
Qin Tiexin stood in the corridor, feeling two completely different breaths coming from behind the two doors, and started his first tempering.
He took off his outer robe, wearing only a pair of shorts, and walked into the fire room.
The heat wave from the fire mouth hit his face. He chose a place not far from the fire mouth and sat down cross-legged. The high temperature burned his skin, and it soon turned red. The sweat evaporated as soon as it seeped out of the skin, leaving a thin layer of salt frost. His breathing gradually accelerated, and the air inhaled in his lungs was heated to a boiling temperature.
He gathered his mind and ran "Cauldron Eating Art" to accelerate the flow of Qi and Blood. At the same time, he mobilized the fire spiritual power in his body to lay a layer of protection in the meridians to prevent excessive temperature from burning the meridians.
Bones begin to feel a dull swelling and pain under high temperatures - this is the feeling that bones expand slightly after being heated and bone marrow becomes active when heated.
He continued to persist in the fire room for nearly an hour. When he felt that his entire body had been completely "heated", he stood up holding on to the wall, pushed open the door of the ice room, and stepped inside.
The extremely cold air in the ice room enveloped him instantly.
His body was still steaming - the sweat had not yet cooled down on the surface of his skin when he was struck by Cold Qi from the ice room, instantly condensing into a thin layer of white frost. Then, he stepped into the ice spring pool in the corner.
The biting cold was like thousands of fine needles, piercing into his skin at the same time. The heat on the skin that had not had time to dissipate met the ice spring, and there was a soft "chi" sound, and white mist rose. The bones contracted suddenly under the stimulation of the extreme cold, alternating with the expansion in the fire chamber just now, forming a violent temperature difference.
There was a very subtle sound - "click" - coming from deep within the bones.
The bones produce stress and microstructural changes under the stimulation of temperature differences, as old bone marrow begins to decompose and new bone marrow begins to grow. An indescribable sharp pain comes from deep in the bones, as if something is being torn apart and reassembled inside the bones.
Qin Tiexin gritted his teeth and stood in the ice spring without moving.
The medicinal power is compressed into the deepest part of the bone marrow under the stimulation of extreme cold, and combined with the alternating stimulation of coldness, it stimulates the deeper potential of the bones.
He persisted in the ice spring for half an hour.
When he stood up from the pool, his skin was all white from the cold, and his lips were purple. But his eyes were bright - because the moment he raised his hand, he could see through the skin the outline of his arm bones, and a faint hint of pale gold.
That is a sign that the power of Marrow Cleansing Liquid is activated and begins to act on the bone marrow.
Without stopping, he wiped himself dry and walked into the fire room again.
After the first round of tempering, he found the pattern: the roasting in the fire chamber can be longer to allow the deep bones to be heated thoroughly, and the ice chamber tempering can speed up the rhythm slightly to maintain the penetration speed of the medicine. Three rounds a day, and the cycle repeats.
On the first day, after three rounds, he almost collapsed. His bones seemed to have been torn apart and reassembled, and he didn't even have the strength to raise his hands. He stood up from the ice spring with difficulty, put on his robe, staggered back to C Zone Number Seven, and fell asleep.
The next day, it was still three rounds. The pain had not diminished, but he was able to stabilize his breathing and was no longer as embarrassed as the first day.
The third day, the fourth day, the fifth day... three rounds every day, and the cycle repeats.
On the seventh day, when he stood up from the ice spring, his body's ability to adapt to the temperature was significantly improved. The shock caused by the alternation from the fire room to the ice room was no longer so severe, and he could adjust his breathing and Qi and Blood operation more quickly. He carefully felt the state of his body - the basic tempering stage had been completed.
The medicinal power of Marrow Cleansing Liquid has been completely pressed into the depths of the bone marrow through these seven days of alternating cold and heat. The extreme temperature difference environment of Ice and Fire Cave is no longer needed in the future. In the weapon refining room, daily forging is enough to complete the remaining tempering.
He took out the merit card from the storage ring to settle the rental fee, returned to the refining room, and used Spirit Stone and merit to remodel the quenching pool that day - digging and enlarging the original shallow pool into a pool large enough to accommodate his entire body, and then bought a large bucket of ice spring from the market to store it next to it.
Starting from the eighth day, subtle changes took place in his cultivation method.
During the day, the broken Law Artifact sent by Deacon Lin filled the forging table. He ignited the ground fire and burned the furnace fire more vigorously than usual. During the forging, the furnace fire roasted the whole body at high temperature, and the temperature in the refining room was compared to The front is a little higher, sweat is constantly oozing out, and it is quickly evaporated by the high temperature. While Law Artifact is taking shape in the hand, the bones also remain active under the high temperature, and the bones of the entire body are evenly heated under the scorching light of the fire.
After finishing a piece of Law Artifact, he turned around and stepped into the ice pool next to him while the heat still lingered on him. "Chi--" White mist rose, and the moment the ice water came into contact with the hot skin, the stimulation caused by the temperature difference accurately acted on the bones.
Stand up, dry off, return to the forging bench, start the fire, and pick up the next broken Law Artifact.
"Work is training" - this is the method he discovered accidentally. Tempering no longer requires special time for it, but is integrated into the work rhythm of the weapon. During the forging, the furnace is used to roast the whole body at high temperature, and after the completion, the ice spring is used to temper, and then returned to the furnace to start the next round of forging. The alternation frequency of ice and fire has changed from three rounds a day to six rounds, or even more.
Efficiency is doubled and merits are accumulated as usual.
One evening half a month later, Qin Tiexin had just completed the sixth round of tempering. He stood up from the ice pool, wiped off the water droplets on his body, and put on a thin shirt.
He was about to take down a piece of Law Artifact that was to be repaired, when he suddenly paused.
He felt a warmth coming from the depths of his bone marrow. It was a warmth that he had never experienced before, gushing from the inside of his body. The warmth was not violent, but it carried a vigorous vitality, like the first spring water that gushes out when winter turns to spring and the glacier thaws, warm and full of hope.
He closed his eyes and looked inwards attentively.
His consciousness passed through the flesh and blood, through the hard outer structure of the bones, and saw the depths of the bone marrow. Between the gray-white bone marrow, a small drop of pure, pale golden liquid was slowly condensing.
It is extremely tiny, like the first dewdrop condensed on the leaves in the morning, but it does exist - inside his own body, it grows by itself. It is not the infusion of external medicine, but the first drop of Spirit Marrow produced by the bone itself.
Body Tempering Ninth Layer, Marrow Replacement Minor Accomplishment.
He opened his eyes and looked down at his hands.
The palms were broad and the fingers were thick. The surface skin appeared rougher and even peeling due to the alternating tempering of days of high temperature and cold water. But he could clearly feel that the bones under that layer of skin had quietly undergone some changes. They were no longer purely mortal texture, but had begun a process of transformation to a higher level. At this moment, it was like a seed planted in the soil had finally sprouted. Although it was only a little bit, it had already entered the threshold.
Spirit Marrow will gradually replace the mortal marrow. When all the bone marrow in the whole body is replaced, his recovery power, hematopoietic power, and even the ability to carry spiritual energy will reach a whole new level.
Qin Tiexin clenched his fist, and his knuckles made a crisp "click" sound. He did not smile, but there was a kind of quiet satisfaction in his eyes.