Feeling the temperature around him from comfortable to hot, Lingkun slowly opened his eyes, looked at the barrel he was in again, his brows jumped unconsciously, and he looked at the teacher next to him who was holding the fire as if cooking, Lingkun asked a little weakly: "I'm in a coma in the waterhole again?"

The old man who lowered his head to control the fire nodded, and said lightly: "The second time you can last for three minutes, it's good." ”

Looking at the old man with a calm look, Lingkun finally broke out, and said angrily: "I said old man, are you sure you are really not playing with me? Do you know the perverted feeling of going from extreme heat to extreme cold? Do you know the difficulty of having to endure the torture of that perverted feeling while controlling your mental power to check information? Do you know that I am still uncomfortable with cold and heat all over my body? Are you sure that this extremely cold and extremely hot stimulation can strengthen my physique and not directly paralyze me......

Ignoring Lingkun's angry complaints, the old man still looked light-hearted, slowly adding firewood to the fire to keep the fire vigorous.

Looking at the old man who completely ignored him, Lingkun finally withered, sighed weakly, closed his eyes and stopped looking at the breezy old man in front of him, lest he be mad again.

Seeing Lingkun close his eyes and sulk, the old man who was light and breezy finally showed a lewd smile, and muttered in his heart: It's all nonsense, it must be useful, if it's useless, is it really okay for me to be idle? But, hehe, there is more than one way, compared to that gentle method, I still like this kind of violence, hehe......

Of course, Lingkun couldn't hear his teacher's muttering in his heart, otherwise, he would probably have to jump up and fight with his old urchin teacher: there is more than one way, and his own method is precisely one of the violence that his teacher chose for him......

After that, Lingkun repeated these boring actions, boiling, soaking, boiling, soaking, soaking, in the two heavens of ice and fire again and again, Lingkun could hold on to the waterhole for longer and longer, and he could feel more and more that his body tormented by these two completely different extreme temperatures was slowly getting stronger. Although the process was painful, he was intoxicated by the feeling of getting stronger after the process, so he gritted his teeth and persevered.

Because, this feeling is something he has never had before, and it is exactly what he desires the most. Now that he can finally get it, even if he will pay a lot, he will still pay without hesitation.

This is also the most fundamental reason why he was able to persevere in the torture of extreme heat and cold that ordinary people could not bear.

Time passed quietly in Lingkun's repetition of these boring behaviors again and again.

・・・・・・

Before I knew it, nearly a year had passed.

It is still in this vast cave, a pool with a hint of cold air, and a young man with a very handsome face is sitting with his eyes closed, only one head is left above the water, the young man's expression is very peaceful, as if he is soaking in a hot spring, and there is no pain at all in the extreme cold.

Slowly retreating from the memory crystal, Lingkun looked at these tiny diamond-shaped crystals in front of him that were as dense as a net, Lingkun's slightly immature little face also swelled with a satisfied smile, after almost a year, he finally read the information recorded in these memory crystals one by one.

Slowly stood up, stretched his waist, and brought a crackling sound. Looking at the milky white pool in front of him, Lingkun also had a complicated expression: I thought that I would faint immediately as soon as I entered the pool, but now I can stay in the water for a long time without fear of this extreme cold, this is indeed a huge progress!

Shaking his head and shaking off his complicated emotions, Lingkun got up, walked to the wooden barrel with firewood, jumped slightly, and sat down in the boiling rock water of the wooden barrel. Jumping into the rock water, despite the high temperature, Lingkun did not have any change in expression, as if it was as natural as a wooden barrel that had been submerged in water.

For nearly a year, the alternating temperatures of the two extreme hot and cold temperatures finally forged Lingkun's physique to a terrifying point. Now Lingkun, because he is often soaked in water, his skin seems to be whiter and weaker than before, but it is precisely under this seemingly tender skin that there is an explosive power hidden before.

Tilting his head slightly, looking at the teacher who was still sitting next to him and controlling the fire, Lingkun's face also swelled with a burst of heartfelt gratitude, and he quickly retracted, changed into a hippie smiling face, and said: "I said, teacher, should you get some delicious game today to treat your genius apprentice? instead of eating those wild fruits that I saw and wanted to vomit." You know, your great apprentice has finally completed the difficult task you left behind, isn't it worth celebrating?"

Over the past year, the master and apprentice have long been accustomed to this seemingly rude but actually very intimate tone.

The old man was so angry that he blew the hair scattered on his face, and said: "If you want to eat it yourself, according to what you said, you want to vomit after eating it for a year, so should I vomit directly when I see it after eating it for so many years?" Also, it took you nearly a year to read all these crystals, although it was a little earlier than I expected, but it was still not ideal!"

When Lingkun heard this, he rolled his eyes and said, "I said, teacher, can you stop being so harsh? Do you know how uncomfortable that perverted feeling is? I dare to say that there are not many people who can persevere at all, okay? You still dislike my slow speed! You must know that for nearly a year, except for sleeping, the rest of the time is basically spent in these two kinds of water, am I easy, I ......?"

Hearing Lingkun's complaint, the old man looked at his apprentice in front of him seriously, although his handsome face was full of expressions, and he didn't have the slightest respect to talk to the teacher, but he knew that this just showed that his student, who was indifferent in his bones, really regarded himself as a teacher. Somewhat pleased with this result, the old man listened to Lingkun's words, and couldn't help but say softly: "You said well, you did a good job, teacher, very satisfied!"

Lingkun, who was accustomed to arguing with the old man, was a little stunned and uncomfortable for a moment when he heard this full of soft words, and then smiled uncomfortably, and his face "emerged" with the shyness and shyness that he should have when he was praised.

Knowing the surname of Lingkun in front of him, the old man was suddenly amused by Lingkun's disguised shyness and Burmese anger, and scolded: "Little rabbit cub, you have to pretend to be embarrassed to me when you praise you once, are you such a shy person?"

Lingkun smirked when he heard this, but he didn't answer, listening to the old man's scolding voice, Lingkun felt comfortable for a while, and sure enough, he was still used to talking to the old man in this tone.

Looking at the smirking apprentice in front of him, the old man sighed, "Since you have completed this kind of training, then, next, it is also time for you to leave." After saying this, the old man did not continue to speak.

Hearing this, Lingkun's smirk slowly retracted and did not speak.

The atmosphere fell silent......