There are many mysteries of the human body, and all of them are indispensable, even if it is an insignificant nail cover, it is also an important part of the human torso, if there is no nail cover, the ten fingers of the person can not exert force, and a little pressure will feel the pain of the heart.

Foot nails are equally important, for a simple example, people inadvertently stumble and kick the foot of the bed, and instantly produce severe physiological pain, the soreness is stronger than being stabbed, this is still the case of nail covers.

The heart, eyes, mouth and nose, spleen and kidneys, blood vessels, and bones are also important parts of the human body. With so many human organs, the importance of the spine can be at the top of the list.

The adult vertebrae have 32 to 34 vertebrae, which form a large dragon that supports the torso of the human body, and the rest of the body is traumatized, and it can slowly recover after recuperation. But when the vertebrae are injured, they will be crippled, and they will have to spend their whole lives in bed.

The strong body realm is the first realm of the middle three products, with the internal strength of the whole body to promote the qi and blood into the vertebrae, from the bottom to the top, the section of the refinement, when the body of the thirty-two vertebral bones are all completed, the vertebrae will become as solid as a golden stone, the volatile power will also be greatly increased.

Between the transition of day and night, Fang Ping nested in the house for two days and two nights, repeatedly consulting the martial arts classics left by Grandpa Bai Yunfei.

This Bai Yunfei's grandfather is a master of the middle three grades who has refined the backbone, and the martial arts classics left to the children and grandchildren of future generations record the extremely detailed process of refining the backbone, as well as some experiences that were realized after refining the backbone.

"At that time, the internal strength was the opportunity, the qi and blood were the true fire, and from the bottom up, the spine was refined with thirty-two sections...... During this period, there was the pain of broken bones and the feeling of burning the body...... It can be used to refine the backbone in water, or to crush the blood vein, red worm, skull flower, black toad and other medicinal materials and apply it to the outside of the skin, which has the effect of promoting internal strength and blood. ”

This is the situation, Fang Ping closed his eyes and savored for a long time.

I have to say that the martial arts classics left by Grandpa Bai Yunfei have a lot of inspiration for Fang Ping, especially some medicinal materials are recorded in it, which have the effect of stimulating internal strength and blood and increasing the success rate of refining the spine.

"My qi and blood are terrifying enough, and the middle and third-grade martial artists may not be able to overpower me, if I still use medicine, it will be too bad for me."

Fang Ping walked out of the house, he hadn't been out for two days and two nights, and as soon as he went out, he collided with Fang Ying.

"Let's go, I'll take you to the street!"

With a greeting, Fang Ping pulled Fang Ying into the bustling streets of the inner city.

"Second brother, are you going to buy me food?" Fang Ying asked expectantly.

"You're thinking too much." Fang Ping shook his head.

Fang Ying: ???

Then what are you doing with me on the street!

When he returned to the courtyard after a while, Fang Ping bought a half-person-high bathtub.

"What's the use of buying this stuff if you don't buy me food." Fang Ying couldn't calm down.

"Then you think too much, this is for me, not for you."

Fang Ping left his sister who was messy in the wind, walked to the mouth of the well and put a bucket of cold well water, and after briefly brushing the dust in the bath bucket, he put the bath bucket in his house, and then filled the bath bucket with cold well water.

Immediately, Fang Ping called Li Rou and Fang Ying, and explained that he wanted to retreat and practice martial arts, don't disturb himself, and don't call himself to eat, in case he goes mad, then he may die.

"Okay, my mother knows." Li Rou looked at Fang Ying seriously: "You heard it, don't you dare to shout, I will beat you with a broom if I make a noise with your second brother." ”

Fang Ying: "......"

Everyone in this family can bully her, right?

Closing the door, Fang calmed down, took off his clothes and sat in the bathtub.

Wrapped in cold well water from the neck down, Fang Ping didn't feel the slightest bit uncomfortable.

He first ran the "Turtle Breath Breath Absorption Technique" for a while, exhaled the turbid air in his body, inhaled fresh air, and made himself pure and flawless from the inside out.

The internal strength in his dantian turned into a big hand that pushed his body full of qi and blood, pushing Fang Ping's majestic and majestic huge qi and blood like a sea into the first vertebrae under his spine.

Suddenly, a sharp pain hit every pore around his body, and the vertebrae that had been tempered by qi and blood also seemed to be filled with a fiery molten slurry and crackled.

"Whoa-la-"

Fang Ping's body temperature continued to rise, and the cold well water in the bathtub quickly boiled and bubbled.

Hearing such a movement outside, Fang Ying, who was about to go to bed, sneakily glanced at Fang Ping's door.

But when she remembered that Li Rou was going to beat her with a broom, she lost the courage to tease her second brother.

……

……

The pain is a little numb.

Fang Ping forgot the time, and when the spine at the bottom of his spine was finished, Fang Ping keenly felt that he had broken some kind of shackles that bound this flesh as soon as he came out of his mother's womb.

But this is not over, Fang Ping rushed to refine the penultimate vertebrae in one go, the difficulty increased a little, but Fang Ping's qi and blood were so terrifying, all he had to do was to strengthen his mind in this torment.

Unlike other middle and third-grade martial artists who tried their best to collect medicinal herbs and meat supplements that urged qi and blood internal strength when they were refining their backbones, Fang Ping did not have this layer of worries, and the "strong body skills" of the realm of "entering the house" required Fang Ping's qi and blood to undergo two transformations, so that it reached a point where it was beyond repeat and terrifying.

In the early morning of the next day, when the sky broke, the vertebrae behind Fang Ping had already been tempered by twenty pieces.

His shoulders loosened, tugging at his back muscles, and he could immediately see a vertebrae like Optimus Pillars, concave under the skin, and the twenty vertebrae that had been tempered could see a faint blood-colored red light through the flesh.

"Mother, I'll go and call Fang Ping to eat." Fang Ying, who got up, said in a daze.

"I'm stupid to sleep, your second brother is in retreat and cultivating." Li Rou stretched out her hand and patted her daughter's face: "You sober me up!" ”

The big black dog lying in the yard stood up in vain and stared at the door vigilantly: "Wang! ”

"I'll open the door." Fang Ying trotted to the courtyard and opened the door.

The man outside the courtyard gate, riding on a fat and strong tall horse, overlooked Fang Ying who opened the door, and asked in a dull and powerful voice, "Where is Fang Ping?" ”

"My second brother is in retreat, what are you looking for him?" Fang Ying replied.

"I can't tell you a stinky girl if you have something, let your second brother come out!" The man snorted and urged.

Fang Ying frightened the man's fierce appearance and took two steps back, and Da Hei stepped forward and emboldened her a little: "My second brother is in retreat and cultivating...... Don't be disturbed. ”

"This Fang Ping is an eight-rank martial artist." The man secretly sighed, and his attitude changed slightly: "Tell your second brother, the imperial court decrees that those who enter the territory of Daze Mansion must go to the county government to register their names. ”

The words were long and gone.

Inside the house.

Fang Ping rushed to refine the twenty-one vertebrae.

Three days later, at night, Li Rou Fang Ying was still sleeping, and Fang Ping's eyes were like electricity to stand up.

The undulating vertebrae under the flesh of his back, the blood-colored red light shining through his body reflected the inside of the room.

[Realm: Six Grades of Strong Body Realm]

Fang Ping punched out into the air, and a terrifying force that moved mountains and seas, majestic and endless, climbed from the bottom of his spine all the way to the top, and then spread all over his body, sending out along the meridians.

Rumble!

The air shook, and the sonic boom of the explosion roared like a beast.

"Terrible! This punch can kill me in front of the spine. ”

Thinking so, Fang Ping walked into the courtyard, took out the face towel pressed under the bluestone slab, dressed in black, and rushed out of the city under the cover of night.

He ran wildly all the way, jumped more than ten meters away, it was not flesh and blood, and he jumped high and fell to the ground, leaving a dense crater.

After a while, Lianjiabao appeared in front of him.