Yet, in an extremely weakened state, Lin Mu attempted to break through the Purple Qi realm, which indeed seemed a bit bizarre. Even when he was full of energy, he couldn't break through this barrier; could he do it when he was close to death? The answer was affirmative, for perhaps this peculiar Martial Arts Supreme Treasure Manual required such an unusual circumstance for a breakthrough! Lin Mu had a strong premonition, yes, an intuition from the Seventh Sense, which had never been wrong.

The truth was exactly that, Lin Mu felt some changes starting in his body. Not only did he not feel cold anymore; instead, he felt a bit warm. That's right, soon Lin Mu was already drenched in sweat, feeling hot in the Ice Cave with temperatures below minus twenty degrees!

A mass of purple-black heat enveloped Lin Mu, slowly spreading outward. The frost several meters around him started to melt into water, forming a damp area, surrounded by a mass of hot steam, yes, purple turning black, increasingly darker. Earth Wolf and the two special guards were slowly also covered by this hot steam, under this steaming heat, everyone became filled with hope and strength. Clearly, this heat was incredibly powerful!

Lin Mu felt as if he was about to explode, his whole body filled with a black heat, this heat energy ceaselessly surged up and down through his body. He wanted to control it, yet he couldn't; he knew this was a sign of the breakthrough from Purple Qi to the next level. If he wasn't careful, he might succumb to inner demons!

And Lin Mu's sole sensation now was heat. Under normal circumstances, breaking through from Purple Qi to Black Qi was impossible because such sauna-like heat could steam a person to death, but not in a below-minus-twenty-degree Ice Cave. However, even in the Ice Cave, the heat was unbearable, making him wonder how to breakthrough in a normal environment?

This was an instance of an unexpected success, fortune from misfortune, ambitions unfulfilled till unintentional endeavors brought success! The Diamond Sutra truly is a Martial Arts treasure, making breakthroughs truly an elusive thing! But Lin Mu acquired a perfect upgrade through an unexpected disaster!

Lin Mu sat on the ground, feeling overwhelmed by the heat in his belly, like an atomic bomb on the verge of explosion! At this moment, Lin Mu's muscles bulged, filled with strength, the veins on his arms as thick as pinky fingers, visibly strong. He was drenched in sweat, pea-sized droplets constantly dripping onto the ground!

Now, this power within Lin Mu was like a snowball, growing larger and making Lin Mu uncomfortable all over. Therefore, he needed to explode, a satisfactory vent to disperse all his energy and heat. Hence, Lin Mu endured with great difficulty and discomfort, suddenly his eyes turned blood red, he roared wildly, "Ah~", and lifted the Iron Fist to smash the large iron door. Lin Mu unleashed all his strength, knowing that if this force must erupt, then smashing this large iron door was his best outlet!

"Boom..." Like an earthquake, the large iron door crashed to the ground, actually smashed down by Lin Mu's fist!

At this moment, Lin Mu felt the heat, like a man's strong desire held for a long time, being fully vented out, exhilarating, it was simply a perfect strike!

"I've broken through!" Lin Mu looked at his hands, hardly daring to believe that it was his punch that knocked down the large iron door. Now, Lin Mu felt light all over, each cell filled with power!

Because Lin Mu's heat had enveloped Earth Wolf and the two special guards, they no longer felt the minus-twenty-degree cold. Hearing the large iron door fall to the ground with a loud bang, Earth Wolf and the two special guards gradually regained consciousness!

As Earth Wolf opened his eyes, he saw significant changes in Lin Mu and the mass of purple-black steam around him. Watching the dominance and uncontrollability as Lin Mu's punch opened the large iron door, it was simply impressive to the extreme! Arrogant to ultimate!

"Boss, you're... a god!" Earth Wolf said to Lin Mu, watching him.

"Earth Wolf, I've broken through the Diamond Sutra Purple Qi realm and now reached the Black Qi realm!" Lin Mu smiled at Earth Wolf and said.

"Wha...what? Boss, you actually broke through, damn... this is too timely! So impressive!" Earth Wolf's face was full of shock and excitement; with Lin Mu's previous strength deemed peculiar, one could only imagine how impressive Lin Mu's strength would be after upgrading.

Earth Wolf looked at the large iron door, about five centimeters thick, lying on the ground with a shocked face and said to Lin Mu, "Boss, is this... your handiwork?"

"Hehe, what do you think?" Lin Mu spread his hands.

"Damn, Boss, you're too amazing now, when will you teach me a few moves so I can also break through a level?" Earth Wolf scratched his head and said. Although Earth Wolf and the others also trained the Diamond Sutra with Lin Mu, Earth Wolf only reached the Cyan Qi realm and hadn't progressed for a long time!

"Foolish, it's all about personal insight, others can't teach you that! Just work harder on your own!" Lin Mu gave Earth Wolf a playful punch.

Upon suddenly reaching the Black Qi realm, Lin Mu also realized what the old man said before; the word "insight" was deeply profound. Some things aren't achievable through others' guidance, they rely entirely on personal comprehension. Without insight, merely learning from others amounts to only grasping some superficiality, with little practical effect!

In the past, Lin Mu had despised the old man for not revealing the fast-track ways to upgrade breakthrough methods. Now he saw the old man was right, without such unique circumstances and those rare opportunities, it would be absolutely impossible to break through! The higher the peak realm reached, the more personal insight it demanded!

"Damn, Boss, you're so unfair!" Earth Wolf pursed his lips.

"This stuff needs personal effort, the old man taught me just a few upgrading methods, the rest was up to my understanding. I've already passed those cultivation techniques to you, how you'll break through depends on your fortune. Any expert, upon reaching a certain peak, must rely on personal insight to upgrade and break through; no one can directly teach you that, not even an Immortal!" Lin Mu said.

"Alright, I'll take it slow then!" Earth Wolf helplessly shrugged his shoulders.

"Let's go, it's getting late, we should retreat now!" Lin Mu waved his hand and said.

Earth Wolf nodded, arranged for the two special guards, and the two of them carried woven bags, following Lin Mu as they walked out!

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