Castle of Black Iron

As Zhang Tie gradually absorbed the powerful strength of blood of Six-armed Demon Emperor, he was shocked by the power of a demon emperor again.

The demon emperor's strength of blood was too powerful. If Zhang Tie absorbed so much strength of blood from other species or living beings, he could turn a powerful living being or fighter into a mummy in one second. However, he could constantly absorb so much strength of blood from Six-Arm Demon Emperor as if there was a vast ocean of strength of blood in the demon emperor's body.

Just now, Zhang Tie was still guessing about the elder's identity; however, 10 minutes later, Zhang Tie was too busy to attend to it; because he started to feel that he was like a lake being gradually filled with water. As water level gradually elevated, water finally flowed out of the bank and started to spread over his body like a flood.

Zhang Tie's blood vessels and muscles all over would buzz under his skin wherever the flood passed. His blood vessels started to undulate like a dragon as his muscles started to bulge out.

Zhang Tie felt like being blown up by the sufficient strength of blood.

However, as more and more strength of blood poured in, Zhang Tie felt that his blood all over was slowly condensing like mercury.

"Ah..." Zhang Tie roared as his forehead panted heavily. Meanwhile, his clothes were torn into pieces due to his inflated muscles; his skin turned red. Zhang Tie started to twist his body painfully in the air.

As more and more strength of blood poured in, Zhang Tie's body as a whole gradually expanded by 2 times...

The sharp pain was indescribable. Despite his amazing pain tolerance, Zhang Tie still couldn't help roaring and twisting his body in the air.

At the same time, Six-armed Demon Emperor was also twisting its body and struggling with almost the same pain.

Zhang Tie felt like a balloon which was inflating. In the end, Zhang Tie found that even his skin gradually became transparent due to intensive inflation of his muscles. He felt having reached the limit of his tolerance...

Even so, the strength of blood of Six-armed Demon Emperor was still pouring into his body like before, which didn't mean to reduce its rate of flow at all.

'Will I die in the Infinite Immortal Prison today? The elder said he wanted to make me a bit stronger using Six-armed Demon Emperor. Doesn't he care whether I'm alive or not?'

This thought occurred to Zhang Tie when his body was going to be blown up by the surging strength of blood.

"You cannot even take the food in your mouth. Too frail! You're too frail..." The elder in black on the throne sighed as he shook his head and pointed at Zhang Tie. "Remember, it's the skill Inclusive of Infinite King Roc Sutra..."

Zhang Tie instantly felt the contents of an occult secret method poured into his mind as his mind sea rocked once.

When his body was going to blow up, Zhang Tie instantly discovered the part about digesting strength of blood in the occult secret method and started to activate that part of secret method facing the threat of blowing up himself...

The secret method should be boosted by the pure strength of Infinite King Roc Sutra. Therefore, it was not hard for Zhang Tie to do that.

As he activated the part of the secret method, Zhang Tie gradually felt his body become a black hole which could constantly take and digest the strength of blood from a balloon which was going to be blown up. The feeling that his body was going to blow up gradually disappeared. Meanwhile, the strength of blood was absorbed by his blood which was as condensed as mercury. As he absorbed more and more strength of blood, his blood was becoming more and more powerful and flexible; meanwhile, it gave out a golden light.

In the beginning, Zhang Tie accepted it negatively. Gradually, he started to adapt to having his blood absorbing the strength of blood of Six-armed Demon Emperor crazily.

At the same time, the pain also gradually faded away; instead, he started to feel airy. Zhang Tie then slowly closed his eyes and sat in the air with crossed legs while absorbing the strength of blood of Six-armed Demon Emperor.

After a few hours, the strength of blood gradually became weaker like a water pipe running out of water, which meant that the strength of blood of Six-armed Demon Emperor finally became exhaustive.

However, when the strength of blood became exhaustive, another wisp of wholly new energy started to pour into Zhang Tie's body like a billowy river.

It was the strength of qi of Six-armed Demon Emperor.

This time, Zhang Tie became smarter. Without the elder's warning, he had hurriedly activated the part of secret method about absorbing the strength of qi and started to absorb it rapidly. By then, if Zhang Tie still didn't know that elder was helping him becoming stronger, he would be too stupid.

Similar to its strength of blood, Six-armed Demon Emperor's strength of qi was also as surging as the ocean as if it would never be exhausted.

As Six-armed Demon Emperor's strength of qi poured in his body, Zhang Tie's qi sea started to change greatly.

A few hours later, when Six-armed Demon Emperor's strength of qi was exhausted, its powerful strength of tendon started to pour in Zhang Tie's body...

Closely followed by its strength of vein, bone, marrow and spirit...

When he absorbed these powerful strengths, Zhang Tie gradually became familiar with the usage of the skill Inclusive in Infinite King Roc Sutra. Whenever he absorbed a kind of strength of Six-armed Demon Emperor, Zhang Tie's body would change greatly.

In the process of absorbing the seven strengths of Six-armed Demon Emperor, Zhang Tie felt like taking a pretty powerful seven-strength fruit of demon emperor.

However, the seven strengths were not all the strength of Six-armed Demon Emperor.

It was Six-armed Demon Emperor's life source which poured into Zhang Tie's body after the 7 strengths.

Then, the hot sun, also the powerful essential core of the qi sea of Six-armed Demon Emperor poured into Zhang Tie's body.

The essential core of the battle qi of Six-armed Demon Emperor was constantly transferred into Zhang Tie's qi sea and assimilated by him. After absorbing the battle qi energy of Six-armed Demon Emperor, Zhang Tie felt his qi sea become boundless as the hot sun in his qi sea became more than 10 times larger.

It was not an end...

After that, the materialized spiritual energy in the mind sea of Six-armed Demon Emperor poured into Zhang Tie's body.

Then, the energy inside the surging points of Six-armed Demon Emperor poured into Zhang Tie's body too.

All the energy carried by the 987 surging points were transferred to the corresponding surging points over Zhang Tie.

Not until then did Zhang Tie know that the energy inside surging points could also be transferred. Zhang Tie could even feel that the brilliant lighthouses were dying out one after another over Six-armed Demon Emperor's body.

At the same time, more brilliant lighthouses appeared over Zhang Tie's body one after another.

After absorbing the energy of all the surging points, it was time for him to absorb the chakras of the Six-armed Demon Emperor starting from the first knight's chakra all the way to the fire chakra...

These chakras were also transferred to Zhang Tie's corresponding chakras in terms of different energies and elements.

As Zhang Tie had already formed his knight's chakra, earth chakra, water chakra and wind chakra, after absorbing the energies and elements of the chakras of Six-armed Demon Emperor, Zhang Tie's chakras became more condensed, heavier and larger.

Based on the experience that he used the energy of the surging points of Six-armed Demon Emperor, Zhang Tie didn't feel unacceptable further changing his chakras.

After absorbing the energy and element of the complete fire chakra of Six-armed Demon Emperor together with those fire elements that Zhang Tie absorbed in Purgatory Samsara Method, Zhang Tie finally formed his last chakra of King Roc Sutra. It meant that Zhang Tie finally broke a vital bottleneck on the road ahead and promoted to a semi-sage level knight.

...

When he constantly absorbed the energies and strengths of Six-Arm Demon Emperor, Zhang Tie was gradually familiar with the skill Inclusive in King Roc Sutra. The core of the skill Inclusive was that King Roc devoured everything in the universe imposingly.

By contrast, Zhang Tie could only refine the opponents' chakras in Purgatory Samsara Method.

The small tree had to meet various conditions before bearing fruits. The more powerful the fruit was, the harder it would be to bear. By killing demon knights, Zhang Tie couldn't even acquire any fruit from the small tree at all.

However, the use of the secret skill Inclusive didn't have so many limits.

There was only one point that was out of Zhang Tie's imagination——the secret skill Inclusive of Infinite King Roc Sutra only took effect on powers on the level of demon emperors who had mastered the force of universal laws. Those below demon emperors couldn't even trigger the secret skill.

Strictly, this secret skill didn't suit to all the enemies...

...

After losing everything, Six-armed Demon Emperor had long turned into ashes...

...

After a few days, Zhang Tie finally opened his eyes after assimilating everything about Six-armed Demon Emperor. After running his spiritual energy, he instantly put on a set of clothes.

Zhang Tie had already promoted to a semi-sage level knight. After assimilating the overall strength of Six-armed Demon Emperor, Zhang Tie was giving out a surging, powerful qi.

"Senior, thanks for you help!" Zhang Tie bowed at the elder in the golden throne after dressing himself up.

"Given your current level, although you're still humble, your body is not too frail anymore..." the elder said with a smile as he pointed at Zhang Tie again. In a split second, Zhang Tie had felt many more secret skills of Infinite King Roc Sutra appear in his mind...

"I've imparted all the secret skills of Infinite King Roc Sutra to you. I gotta get going. As for whether you could survive yourself and leave the immortal prison, it depends on yourself..."

When Zhang Tie was shocked by so many new secret skills in his mind, he heard the elder's words. Then he became more stunned. Before he asked about the reason, the elder had waved his hand as the whole space started to rotate. In a wink, Zhang Tie had come to a desolate and grim place. He was standing in the sky above a dark abyss, which was covered with heavy black fog. There might be surging, scorching magma at the bottom of the abyss...

When Zhang Tie observed this place, he found many pairs of bloody eyes were watching him in the black fog. Zhang Tie felt dangerous and powerful qi approaching him at once...