Limit

Iron Sand Skin Grinding Method requires digging a deep pit, burying rough iron sand around the pit's perimeter, then internally taking a medicinal powder and externally applying a medicinal liquid. After that, one strikes the iron sand around the pit's edge from the bottom, tempering the skin.

When practicing for the first time, the skin is extremely prone to damage, leaving bloodstains. An extra portion of Qi Blood Powder is needed. After repeated attempts, it gradually improves until one can freely strike and rub against the iron sand in the pit without damaging the skin, gradually achieving success.

"It is indeed much rougher than the Gold Jade Mo Pi Fa."

Chen Mu thought to himself.

Using such a crude method to grind the skin, no matter how much Qi Blood Powder is used for conditioning, or how much internal medicine is taken to protect the body, it will definitely leave hidden injuries and ailments. They may not be apparent when young, but in old age, the whole body will ache. It is far inferior to the Gold Jade Mo Pi Fa.

Obviously, the efficiency of this medicinal powder is not as good as the Gold Jade Mo Pi Fa. Simply burying oneself in sand and irrigating it cannot allow the Medicinal Power to penetrate the skin. It must be supplemented by striking and tempering with iron sand to produce results.

No sooner said than done.

Chen Mu was very efficient. He quickly dug up the sand pit he had used to cultivate the Gold Jade Mo Pi Fa, created a deep iron sand pit, and prepared several concocted medicinal powders. After taking off his clothes, taking the internal medicine and applying the external medicine, he jumped into the iron sand pit.

The Iron Sand Skin Grinding Method manual says that when starting, one should only practice for a quarter of an hour each day. As the skin gradually strengthens, one can begin to increase the practice time. When the method is mastered to a small degree, one can practice for an hour each day, and after great success, one can temper for two hours each day.

For Chen Mu today, such restrictions naturally do not exist.

His Gold Jade Mo Pi Fa is complete. The strength of his skin now is such that even someone who has cultivated the Iron Sand Skin Grinding Method to completion would at most be similar to him. The rough iron sand in the deep pit cannot cause any damage to his skin at all.

Chen Mu didn't care too much about whether it caused damage or not. As a dignified man, he didn't need to cultivate a body of ice and jade. He only cared about how efficient it would be to practice the Iron Sand Skin Grinding Method with his current skin strength.

Soon.

After an hour of practice.

Chen Mu felt that his skin all over his body... had not changed much.

Obviously, on the foundation of the complete Gold Jade Mo Pi Fa, the effect of this Iron Sand Skin Grinding Method is already minimal. Even if it is still effective, it would be difficult to see any results without years of cultivation.

But Chen Mu didn't care about this. He directly summoned the system panel, and sure enough, the system panel did not disappoint him.

[Iron Sand Skin Grinding Method (Incomplete)]
[Experience: 27]

Although he couldn't feel any effect, after an hour of tempering, repeatedly applying the medicinal liquid, the experience points directly accumulated to a full 27 points, and Chen Mu didn't feel any discomfort at all.

Obviously, with his current skin strength, this hour of tempering was just a piece of cake.

"As expected."

A slight smile appeared on Chen Mu's face, so he continued to concoct medicinal powders and temper himself in the iron sand pit.

He practiced like this for nearly four hours, continuously applying the medicinal liquid, and finally felt some numbness and discomfort in the skin all over his body, vaguely reaching the limit of what he could bear.

When he summoned the system panel again, the experience points had accumulated to a full 132 points!

Chen Mu jumped out of the deep pit, and after a short rest, he consumed the experience points and directly raised the Iron Sand Skin Grinding Method to a small success!

Buzz!!!

It was as if two or three months of tempering accumulated in the iron sand pit had exploded all at once. There was also a heat wave surging and exploding in his body, constantly rising and spreading to all parts of the skin all over his body.

This was different from when he improved the Gold Jade Mo Pi Fa. The Gold Jade Mo Pi Fa was more like ten thousand needles piercing, while the feeling of this method was like rough iron sand rubbing hard on every part of the body.

However, for Chen Mu today, this feeling of friction was not very painful.

It even felt faintly comfortable.

After all, compared to the improvement process of the Gold Jade Mo Pi Fa, the degree of pain was completely incomparable. This was also because, after having a perfect foundation in the Gold Jade Mo Pi Fa, the resistance of the entire body's skin membrane was greatly improved.

A moment later.

The surging Qi and blood within his body returned to stability.

Chen Mu clenched his fist. This time, he finally felt some changes. The Iron Sand Skin Grinding Method at the Minor Accomplishment stage, superimposed on the perfect Gold Jade Mo Pi Fa, still had a slight effect, making his skin membrane a little stronger.

"Very good, it seems the direction is right."

He had cultivated the Iron Sand Skin Grinding Method to the Minor Accomplishment stage in just one day, and this was on the basis of already having cultivated a Mo Pi Fa to perfection. If this were said out loud, it would shock many people.

But this was reasonable for Chen Mu, because with his current skin membrane strength, being able to withstand five hours of Iron Sand Skin Grinding Method cultivation in a single day was already pushing the limit. Moreover, all the medicinal juice repeatedly applied externally during these five hours was completely converted into experience points by the system panel without any waste.

This was originally the Medicinal Power that ordinary people would need to spend two or three months slowly refining to absorb.

It was nearly late at night.

Chen Mu did not continue to cultivate. After washing up, he returned to his room to rest.

When the next day dawned, he began cultivating the Iron Sand Skin Grinding Method again. This time, he endured for even longer. Apart from the time for eating and resting in between, he tempered his skin membrane for a full six hours, accumulating nearly two hundred experience points, including what was left from before.

On the third day.

After four hours, the Iron Sand Skin Grinding Method reached the Great Accomplishment stage!

The appearance of Chen Mu's skin membrane had not changed much since he began cultivating the Gold Jade Mo Pi Fa, but with the Great Accomplishment of the Iron Sand Skin Grinding Method, his skin color finally became a little darker, with a hint of bronze luster.

And as Chen Mu had expected, his concurrent cultivation of Mo Pi Fa not only did not lead to half the effort for twice the result, but instead became faster and faster as his skin membrane gradually strengthened. It only took three days for the Iron Sand Skin Grinding Method to go from Minor Accomplishment to Great Accomplishment, and only five days from Great Accomplishment to Perfection!

At this moment.

Chen Mu's skin membrane was deep in color, presenting a thick bronze luster, very similar to the Copper Steel Skin possessed by Zhang Xiang Shen's son. He used a slightly dull kitchen knife to cut across his arm, leaving only a white mark.

"Even if it's not as good as that person, it's at least ninety percent there, and the Qi and blood in my body has become even more vigorous. Although the increase in pure strength is not great, my stamina has increased by at least double compared to before."

Chen Mu exhaled.

When martial artists fight, at low levels, they are fighting with courage. The brave win when they meet on a narrow road. But as the realm gradually rises, they are competing for something more essential: who can withstand more hits, whose saber technique is more refined, whose strength is more abundant, and whose stamina is longer!

The perfection of both Mo Pi Fa, superimposed together, brings not only resistance, but also more abundant stamina. This means that when he enters the Lian Rou level, his burst will be more sustained.

Where is the limit of skin membrane strength?

Chen Mu quickly found the answer to this question.

Because when he refined the third type of 'Coarse Salt Skin Grinding Method' he found to perfection in just seven days, the Qi and blood in his body was as vigorous as a flame, already reaching the limit that his current body could withstand, and the same was true for his skin membrane strength.

After the Iron Sand Skin Grinding Method reached perfection, his skin turned a deep bronze color, but after cultivating the Coarse Salt Skin Grinding Method, his skin color gradually lightened again, eventually returning to its original wheat color, or even lighter.

"Copper Steel Skin."

Chen Mu felt the strength of his skin membrane and couldn't help but smile.

For ordinary people, either they are gifted, or they have to spend more than a few years to have a chance to cultivate such a Copper Steel Skin, but for him, it only took less than a month to achieve perfection!

If he had to say, this level should be the limit of the Mo Pi realm. It is not inferior to a natural Copper Skin at all, and even in terms of the thickness of Qi and blood, perhaps he is even stronger!

"Reaching perfection in Mo Pi allows one to withstand the burden brought about by the explosive increase in muscle strength at the Lian Rou realm. With my current Copper Steel Skin, once I step into the Lian Rou level, the strength I can bear will inevitably be much greater."

Chen Mu took a deep breath.

He slowly retrieved a small booklet from the bedroom.

Wild Bull Lian Rou Method

This was what he had asked Min Baoyi for three days ago. Although he could have asked Xu Hongyu for it, with Min Baoyi, a person at the Lian Rou perfection stage, nearby, there was no need to seek far and wide, just find a suitable reason.

In fact, Min Baoyi didn't even care about Chen Mu's reason. When he heard Chen Mu say that he wanted to study the Lian Rou method in advance, he casually agreed, and the next day he brought the Lian Rou Method and gave it to Chen Mu, even more casually than Chen Mu had expected.

Obviously, to someone like Min Baoyi, the Lian Rou Method was nothing special, and Chen Mu was someone Xu Hongyu wanted to cultivate anyway.

However.

When handing the Lian Rou Method to Chen Mu, Min Baoyi still gave a warning, saying that unless the Mo Pi had been cultivated to perfection, one should not rashly start cultivating the Lian Rou Method, because of the progressive relationship between the levels. If the Mo Pi had not yet reached perfection and one practiced the Lian Rou Method, the skin and flesh would merge together at once, and it would be even more difficult to go back and grind the skin, which would directly affect the Lian Rou Method and make it impossible to reach perfection.

Mo Pi is the foundation of Lian Rou, and Lian Rou is also the foundation of the subsequent Yi Jin and Duan Gu.

And this made Chen Mu realize that refining his Copper Steel Skin might be very correct, because if Lian Rou, Yi Jin, and Duan Gu all have a limit, then taking every step steadily can fully utilize the advantages of the system panel.