"Golden light snake blood." Lin Fei muttered in a low voice.

The porcelain bottles were filled with the fresh blood of golden light snakes.

Golden light snakes were a type of snake with a very small and short body. They were a specialty of Lu Mountian.

They were highly poisonous. Although it was not a deadly venom, if someone was poisoned by its venom, they would kill quickly if not treated effectively.

Golden light snakes had a special characteristic. Once their blood was applied to the skin, it would gradually make the skin tough.

Even some small scars, when smeared with golden light snake blood, could gradually fade away or even disappear.

If it wasn't for the fact that venom of the golden light snake was incurable and powerful, Lin Fei was afraid that all the golden light snakes in Lu Mountian would have been caught.

Lin Fei suddenly thought of this characteristic of golden light snake blood, wondering if it would be helpful for practicing Vajra Iron Cloth.

So he asked the butler to purchase golden light snake blood for a high price. Despite the venomous nature of golden light snakes, some people still venture to catch them.

"Let's try."

Lin Fei took a deep breath and poured the golden light snake blood from the porcelain bottle and applied it all over his body.

Instantly, Lin Fei's whole body emitted an unpleasant smell of blood.

The snake blood applied to his body quickly had an effect. A tingling and unbearable feeling arose.

Lin Fei knew that Vajra Iron Cloth was actually constantly breaking and refining the skin. And the golden light snake blood was repairing the skin. So this tingling and unbearable feeling occurred.

However, this proved that golden light snake blood was effective.

After using up a bottle of golden light snake blood, Lin Fei heard the system's voice in his mind about an hour later.

"Your Vajra Iron Cloth worked particularly hard today, and its cultivation progress has increased by 2%."

"Whoosh."

Lin Fei opened his eyes, unable to hide his joy.

"Just one bottle increased my cultivation progress by 2%. And this time, I bought dozens of bottles. Plus, the butler is still helping me purchase snake blood, so I'll have even more blood in the future."

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Lin Fei's eyes gleamed with excitement. This Golden Light Snake Blood was of great significance to him.

It meant that Lin Fei was confident that he could reach the limit of Vajra Iron Cloth in a short period of time, thus giving birth to inner power. And this inner power was extraordinary, it was part of the hard martial arts that was not to be underestimated.

"Continue."

Lin Fei applied the blood again. Amazingly, it was still effective.

For the next few days, Lin Fei spent almost every day in his room applying golden light snake blood to his Vajra Iron Cloth. And his Vajra Iron Cloth was improving at a speed never seen before.

After a few days, the system's voice rang in Lin Fei's mind.

"Your Vajra Iron Cloth has broken through to the ninth level after days of hard work!"

Lin Fei touched his skin and found that the membrane had become significantly tougher. His whole body was like a layer of "light armor," even more terrifying than ordinary light armor.

Now, the Vajra Iron Cloth could finally show its power.

Lin Fei took out a dagger and lightly drew it across his arm's skin.

"Shhh."

To his surprise, his skin wasn't cut.

Lin Fei applied more force and had to use at least 30% of his strength to barely cut a small wound, which quickly stopped bleeding.

"Untouchable by sword or spear!"

Lin Fei's eyes flashed with a hint of strangeness. When hard martial arts reached their peak, they would exhibit some mystical characteristics. And the mystical characteristic that his Vajra Iron Cloth exhibited was untouchable by sword or spear. Even if he stood in place and let an ordinary person use a saber to hack at him, they probably wouldn't be able to harm him in the slightest.

This was the terrifying aspect of hard martial arts.

"Vajra Iron Cloth has also reached the ninth level, but it still needs to continue. It would be best to cultivate until inner power is born…"

Lin Fei continued to use the golden light snake blood.

He felt it out. The effect seemed to have weakened a bit. But it was only a little weaker.

The progress of Vajra Iron Cloth cultivation was still very fast.

It was only when he ran out of golden light snake blood and had not collected more that Lin Fei could take a temporary break. Otherwise, he would be applying snake blood every day.

In the blink of an eye, twenty days had passed.

"System."

Lin Fei brought up the system to check the progress of his many martial arts.

Host: Lin Fei

Martial Arts Realm: Body Refining Ninth Level

Giant Whale Body Refining Technique: Ninth Level (99% Progress)

Dragon-Elephant Vajra Fist: Perfection (0% Progress)

Nine Shadow Saber Technique: Perfection (18% Progress)

Vajra Iron Cloth: Ninth Level (95% Progress)

Tendon Transformation And Bone Forging Technique: Seventh Level (68% Progress)

Flowing Clothes Skill: Transcendence (0% Progress)

Lin Fei saw the progress of the Giant Whale Body Refining Technique. It had reached 99%. And Vajra Iron Cloth was not far behind.

Both were just one step away from giving birth to inner power.

"The Giant Whale Technique is about to give birth to inner power. What kind of inner power it will give birth to?" Lin Fei murmured softly.

Many Body Refining martial artists had different types of inner power. After all, the martial arts they practiced were different.

Lin Fei took a deep breath. He adjusted his state of mind.

"Let's begin."

He directly swallowed ten Blood-Increasing Pills in one gulp.

Ten Blood-Increasing Pills were just enough to increase the cultivation progress of the Giant Whale Body Refining Technique by 1%.

Lin Fei's Giant Whale Technique was only 1% away from giving birth to inner power.