Luckily, it's late at night, and there's basically no one on the street.

Otherwise, when someone saw Xu Yan's ragged clothes and bloody face, he would definitely be shocked.

Xu Yan tiptoed back to his house and opened the door, but fortunately, his parents had already gone back to the room to sleep.

He didn't dare to turn on the light, for fear that his appearance would frighten his parents.

Flashed directly to the bathroom, and at this time, my parents heard the movement, and my mother came out of the bedroom and shouted, "Xiaoyan, are you back?"

"Mom, it's me, you can sleep, I'll take a shower and rest......"

Xu Yan turned on the shower head in the bathroom and began to rinse the blood stains on his body.

Fortunately, under the effect of the Healing Pill, Xu Yan's wounds gradually healed, and they were basically invisible.

As long as the blood stains on the body are washed away, parents should not be able to see it.

While taking a bath, Xu Yan recalled the scene just now.

After using the [Soul Exchange Card], Rhubarb woke up from Qiu Zhifa's body.

At the beginning, I didn't fully realize that it had become a human, and I wanted to come up and lick Xu Yan as before, and almost disgusted Xu Yan.

Then, Xu Yan quickly used a few minutes to roughly understand the state of rhubarb after changing his soul.

Its soul is rhubarb, and it also has some habits and memories when it was a dog, and it is still very intimate and trusting with itself, but at the same time, it can also read some memories stored in Qiu Zhifa's brain.

It's just that rhubarb won't be able to change its human-like behavior and demeanor at all for a while.

Even with Qiu Zhifa's memory, Rhubarb still behaves like a stupid dog.

Even speaking can be regarded as more difficult, only able to spit words one by one, and often the words do not reach the meaning and are ambiguous.

However, this is exactly what Xu Yan wants, and he doesn't have to deliberately explain what Rhubarb needs to do after being brought home by Qiu Renyi, just let it be himself.

……

Coming out of the bathroom, Xu Yan finally felt the consequences of overloading his body with broadcast gymnastics and Ling Bo microstepping.

The muscles showed signs of severe strain, and they were very sore.

In particular, the bones of the legs also have a feeling of pain that is being boosted by the seedlings.

If there was no healing pill exchanged from the system, Xu Yan would probably have at least some serious injuries on his body now.

After all, although Xu Yan's vitality has now broken through fifty points, he has not begun to quench his bones from beginning to end.

Among the warriors of the lower three ranks, bones are the most important cornerstone to support the strength of the entire body.

The strength of the muscles and qi and blood in a person's body should never exceed the upper limit of what the bones can bear.

Otherwise, your bones will be completely shattered from the inside before your strength has exploded.

Normal people, if they don't quench their bones, their vitality can reach 40 points, which is already the limit.

However......

Xu Yan's contemplation and years of exercise have broken through the limit of his body's vitality to 50 points.

"I should be able to start refining bones by now, I don't know...... There are 206 bones in the human body, how long will it take me to be able to temper them? ”

Sitting cross-legged on the bed, Xu Yan once again entered meditation.

【Immortal Reincarnation Yin and Yang Concept Idea】

Xu Yan followed what Old Man Chu said in his notes, starting from his own visualization, communicating with the subconscious, and slowly guiding the subjective consciousness...... began to try to open a way to quench bones in the body.

Because he has now mastered a Xuan-level top-grade footwork [Elementary Lingbo Microstep], Xu Yan will of course take the lead in choosing to refine the bones of his lower limbs.

[Limbo Microstep] is not only used to target the enemy, but also to anticipate the enemy's opportunity to avoid the opponent's attack, and more importantly, ...... Even if you can't beat it, the effect of using it to escape is also a bargain.

In his mind, Xu Yan's embodied object, that is, the rope that seemed to be used for hanging, emitted a powerful spiritual power.

According to the guidance of Xu Yan's subjective consciousness, he began to oscillate and integrate in Xu Yan's body with difficulty.

The power of qi and blood began to surge,

Xu Yan was immersed in it, and suddenly had another illusion.

This qi and blood power seems to be free radicals produced by mitochondria in cells!

However, as soon as he lost his mind, he felt that the "hanging rope" manifested itself, and directly opened up a qi vein from Xu Yan's dantian position, and then the qi and blood produced in his body began to flow down this qi vein and touched the first lower limb bone.

There are a total of 62 bones in the lower limbs of the human body, 31 on each side.

Xu Yan calmed down and felt the feeling of the power of qi and blood washing over the first lower limb bone.

At the beginning, the qi and blood came into contact with the bones, and there was a violent collision.

It seemed that the bones were resisting this force, but slowly, as the qi and blood infiltrated and resonated with the bone marrow, the outside of the lower limb bone began to undergo subtle changes.

Zizizi......

Xu Yan only has a total of 50 vitality points, and in the battle with Qiu Zhifa tonight, he has also thought about a lot of qi and blood strength.

Therefore, the qi and blood power of the dantian in the body now is only less than one-fifth of what it was at its peak.

In almost half an hour, one-fifth of this qi and blood was quenched and consumed by this lower limb bone.

And the entire lower limb bone has not even been tempered by one percent.

He immediately swallowed a Qi and Blood Pill from Qiu's father, a Qi and Blood Pill, and slowly digested it in the dantian.

It took almost half an hour to replenish Xu Yan's deficit of qi and blood, and the remaining qi and blood slowly condensed into a mass of power in the dantian, which was slowly consumed and refined.

Xu Yan calculated that there was about one Qi and Blood Pill, which was equivalent to about five times the Qi and Blood Power he currently had.

However, when refining, there must be some loss, and it is impossible to refine all of it into its own qi and blood.

Therefore, a Qi and Blood Pill is about five times the Qi and Blood equivalent to an ordinary person with a vitality of fifty points.

While thinking about and calculating these, Xu Yan continued to refine the leg bone.

Unconsciously, the East turned white.

The night went on like this, past seven o'clock in the morning.

Xu Yan finally finished refining all the qi and blood converted by the Qi and Blood Pill, and that piece of lower limb bone was only about 5% in total.

Other words......

After mastering the entire bone quenching process, Xu Yan's current speed of bone quenching, without the replenishment of Qi and Blood Pill, can quench 1% of a lower limb bone in the whole body, which takes about an hour and a half.

"Is it so hard to quench bones?"

The speed of quenching the bones was very slow, and Xu Yan became a little impatient in his heart.

At this rate, a normal person with a vitality of 50 points can only temper at most 1% of the lower limb bones a day without the replenishment of Qi and Blood Pill.

If you want to temper one bone, wouldn't it take a hundred days, or at most three bones in a year?

……

【2nd Update】