My bathroom leads to the celestial realm.

26. Sages of the past saved the day and protected the emperor!

Xu Yan, unaware that his past had almost been exposed, continued, "The rising and setting of the sun and moon, the growth of plants and trees, and the operation of all things are ultimately supported by energy. Flour may seem ordinary, but it actually contains enormous energy. It usually lies dormant inside and can only be absorbed by the stomach and intestines when ingested. Only under specific conditions can it be released all at once..."

At this point, he raised his hand and made a flower-blowing gesture: "Bang!"

He Tiannan was even more confused and honestly shook his head: "I don't understand!"

Xu Yan was even more troubled. How could he make the natives, who had no common sense at all, understand what energy was?

I need help urgently! Reward offered!

He had to change his perspective and try to explain from the viewpoint of a cultivator: "All the forces in the world are a form of energy, such as the heat of flames, the impact of flowing water, the rustling of grass in the wind, and even spiritual energy..."

He Tiannan understood immediately. He suddenly extended two fingers, and a flickering flame appeared at the fingertips. Then he changed his spell, and a stream of water appeared out of thin air. Finally, he waved his sleeve, and a gentle breeze swept by.

"I understand!" he said smugly.

Xu Yan nearly collapsed: "Spiritual power... it's also a kind of energy, but only one type of energy... Oh my god, I can't explain it to you, just let me die!"

He Tiannan glared with displeasure. "I understand everything. Who are you trying to impress with this hopeless act?"

But upon closer examination, it turns out that the kid actually told the truth, and it is precisely the truth that is most hurtful.

He Tiannan considered himself intelligent, but this little guy kept talking like he was reciting gibberish, and he could only understand half of what he was hearing.

A brand new world was about to unfold, but he couldn't find the entrance, and his Dao heart was starting to waver.

After much agonizing thought, Xu Yan finally found a breakthrough: "The sun, the sun's light shines down from the sky, and plants grow because of it, understand?"

He Tiannan nodded: "Spiritual herbs and medicines, gathering the essence of the sun and moon, I understand!"

Xu Yan covered her face: "Plants gather their own essence to bloom and bear fruit, understand?"

"Not necessarily. There are countless medicinal herbs and trees, whose roots and stems are used in medicine..."

Xu Yan gritted his teeth. "Trying to take a beating, huh? If I don't give you a taste of your own medicine, are you getting cocky?"

He immediately retrieved the contents of his textbook from the depths of his memory, raised his head at a 45-degree angle to look at the sky, cupped his hands and said, "All things in nature have their own principles. Among my disciples are many sages and elders who have all attained mastery over creation, which is called the principle of things!"

He Tiannan felt as if he had heard celestial music, his Dao heart trembling with emotion. He solemnly bowed and said, "Excellent!"

"The ancient sages, whose surname was Niu and given name Dun, comprehended the Great Dao of Power, their achievements surpassing all ages; the ancient sages, whose surname was Fa and given name Laday, comprehended the Great Dao of Thunder, their fame lasting for centuries; the ancient sages, whose surname was MacSwell and given name Swell, comprehended the Great Dao of Electromagnetism, unparalleled throughout history; and then there was the Electromagnetic Master, who surpassed them all, revered by hundreds of millions of people!"

Xu Yan spoke eloquently, surrounded by a radiant aura. With each name he mentioned, the aura grew even stronger.

But he was really annoyed. Why was it that every time he mentioned a certain avenue, all he heard about was a foreigner? It was really not inspiring!

Left with no other choice, they had to ask the Wu'an Protector of the Nation Electromagnetic Manifestation True Lord to intervene and save the day.

He Tiannan was deeply moved: "Excellent!"

He wished he had been born thousands of years earlier so he could have paid homage to the sages in person and thanked them for passing on their teachings.

But then he realized something was wrong: "Wait a minute, which school of thought does this physics belong to? I've never heard of it before. And these sages..."

Xu Yanxin said, "You're right if you haven't heard of it!"

He secretly regretted his words, realizing he had spoken without thinking in a moment of enthusiasm. He quickly corrected himself: "Don't worry about the details, focus on the key points—force, electricity, light, sound, and heat—these are all branches of the great path of physics."

He Tiannan wasn't so easily distracted, but he knew exactly what was more important to him, so he feigned ignorance: "These major traditions are completely unrelated, so how come they all fall under the category of physics?"

"Because they transform into each other!" Finally getting to the key point, Xu Yan's confidence returned. "This is called the conservation of energy!"

He immediately launched into a lengthy explanation, drawing on a wide range of sources, first mentioning that friction generates heat, then that light generates heat, lightning strikes generate fire, and that thunder shakes the heavens and earth... He rambled on and on, but finally managed to get He Tiannan to understand what the conservation of energy meant, and that energy conversion inevitably involves loss.

Even so, it was deliberately kept under wraps. The four fundamental forces were not mentioned at all, and the mass-energy equivalence equation was not dared to be discussed, not only because it was too complicated, but also because once it was mentioned, it would lead to more disciplines and more theories.

Having already exhausted all his words on the conservation of energy, Xu Yan really didn't want to mention anything else—he suddenly realized that this academically challenged student was actually quite knowledgeable!

After a moment of digestion, He Tiannan immediately applied this principle to other situations: "For us cultivators, of the ten parts of spiritual energy we absorb, less than one-tenth or one-twelfth is retained and transformed into true essence. Isn't this the law of conservation of energy?"

"Indeed!" Xu Yan praised enthusiastically. "So, you understand now, don't you?"

He Zhenren, with an old man's face on the subway, said: "What do I understand now?"

"Flour!" Xu Yan reminded him, "This stuff inherently contains energy, and given the right conditions, it can be released!"

He didn't want to bring this up again. If He Tiannan pressed on, he'd probably have to explain how chemical bonds are formed, how they break, and whether they absorb or release energy.

However, since this matter arose from flour, it must be mentioned.

He Tiannan nodded: "Although I only have a vague understanding, I know that its essence lies in energy transformation... transformation... uh, transformation?"

He suddenly froze, his mind racing with only one thought: Could breaking through the core to become an infant be a kind of transformation?

He Tiannan seemed to understand something, but when he thought about it carefully, he couldn't grasp the clues. He vaguely felt that if he could understand the mystery, he could open the door to advancing to the Nascent Soul stage!

He could no longer sit still and hurriedly said, "Young friend, please stay here for now. I will return from my seclusion and we will enjoy a drink together!"

Without waiting for Xu Yan's response, he leaped up.

Xu Yan immediately panicked and reached out to grab it: "Hey, hey, I'm still waiting to cultivate, at least leave me a cultivation technique—"

Ke Hetiannan had already soared into the sky on his escape light, and only one sentence drifted back from afar: "Wait until I return from my seclusion... return... return... return..."

The echoes reverberated between the cliffs, but He Tiannan had vanished without a trace.

Xu Yan withdrew his empty hand and sighed softly.

Damn it, we've lost out big time! Next time, it has to be cash on delivery... no, it has to be cash first, then delivery!

Otherwise, I'm done playing!

They circled around dejectedly, unable to find a way out; it seemed they would have to fly to leave.

Feeling a bit hungry, he went back to the hut and searched it, but found neither food nor water, not even a single piece of firewood. He was immediately consumed by rage.

Hey, if you're going into seclusion, at least leave some food behind!

Even if I starve to death, you can't shirk your responsibility for this!