"Children, do you know what this is? Yin and Yang, what is Yin and Yang?"

"Teacher, I know, Yin and Yang are the forces of matter and antimatter."

"Teacher, I felt Yin and Yang yesterday."

"I also have Yin and Yang."

A group of children surrounded a female teacher in the elementary school. The education method wasn’t desk-bound teaching, because these elementary students were essentially still infants, so modern elementary schools have changed their approach.

"Oh? Starting to learn the Yin-Yang Dao at such a young age?"

Listening to the teaching of Yin-Yang Dao in the school, Jia Yan stood silently and listened for a while.

This Yin-Yang Dao teaching, as it was aimed at a group of little infants just over the age of three, wasn’t too deep. However, it was explained simply yet effectively, which satisfied Jia Yan quite well.

"These kids aren’t exaggerating. The first speaker seems to indeed have some talent in Yin-Yang Dao; there’s already a trace of matter-antimatter power in his body. However, if he doesn’t know how to guide it, it will take at least two to three years to unleash this power. Of course, that would be quite fast."

Jia Yan stood silent for a moment and then disguised as a parent, gradually walked into the campus.

"Sir, may I ask which child’s parent you are?"

"That’s right, I am Xu Duoduo’s parent."

"Oh, Xu Duoduo, he’s in first grade, class three."

Jia Yan referred to Xu Duoduo, the child who had a bit of Yin-Yang Dao power.

After communicating with the guard, Jia Yan was allowed into the school.

Schools nowadays have extremely complete security systems, so they don’t excessively screen outsiders. If outsiders attempt anything against the children, these security systems would instantly eliminate the threat.

Arriving at the door of first grade class three, Jia Yan, disguised as an old man, silently observed the teaching inside.

"Excuse me, sir, are you here to find a particular child in our class?"

The teacher finally noticed Jia Yan’s presence, but of course, it was because Jia Yan wanted her to notice him.

"Yes, I’m looking for a student. I just happened to pass by your class and stopped when I heard your words."

"Oh, sir, do you have any insights?"

The teacher, for some reason, asked Jia Yan this question.

"Haha, I wouldn’t call it insights, just a different perspective on what you just explained. By the way, can this child come over? Grandpa will help the teacher explain a bit."

"Sure."

The child named Xu Duoduo was called by Jia Yan and approached without any worry or shyness.

Jia Yan placed his finger on the child’s forehead as the teacher and the group of children curiously watched. 𝑓𝑟𝑒𝘦𝓌𝑒𝑏𝑛𝑜𝘷𝑒𝘭.𝒸𝘰𝑚

"Alright, teacher, I’ve done what I needed to do. Feel this child’s change, and you’ll understand what I want to tell you."

Jia Yan finished speaking and turned to leave.

"Hey, sir, sir..."

The teacher finally sensed something was amiss and wanted to stop Jia Yan. Upon reaching the door, she was stunned to find nothing there.

Everything that had just happened felt like a fleeting dream, leaving her utterly shocked.

"What happened?"

At this moment, the principal, who was also the most powerful combatant in the school, reaching Earth Level high tier, a middle-aged Earth person, arrived at the classroom door due to the commotion.

The teacher nervously explained the recent incident to the principal, who was also quite astonished.

"I checked the surveillance, and no one was here. You all... I’ll look at the child first."

The principal’s expression finally changed. He quickly called the child who had been touched by Jia Yan’s finger to conduct an examination.

"Eh, this... this child’s Yin-Yang Dao has already been cultivated. How do you feel, child?"

"I feel great; that old gentleman gave me a very warm feeling. I really like him."

The little boy named Xu Duoduo earnestly answered.

"This... what is going on? There must be an issue. Xu Duoduo, try recalling what the old gentleman did. Also, Teacher Zhu, he said you would understand. Take a look as well."

"Okay, I’ll take a look... What’s going on? I sense the correct teaching method. Who is this old gentleman?"

Suddenly, the entire school was astonished.

Soon after, this matter swiftly reached the highest command center of the Earth Alliance.

Normally, it would be unlikely for a strange event to reach Earth’s highest command center. After all, the current Earth Alliance is different from the past; with so many alien allies, and numerous strong Earth and alien beings within its borders, they don’t bother with mysterious occurrences that happen occasionally.

Because most are pranks by strong beings, experiments, or harmless tests.

But this time was different. The teaching method spoken of by the teacher, guiding Yin-Yang Dao, shocked the entire educational department.

"Such a directly simple way to guide Yin-Yang Dao, fantastic! It’s exactly the foundational basis that Earth people lack. With this, Earth’s future children might understand Yin-Yang Dao a few years earlier, and the overall progress of Earth’s strength would take a significant leap forward. Who exactly is this old gentleman?"

No matter how the intelligence system investigated, they couldn’t find out who this so-called old gentleman was. At most, they discovered his appearance in some public surveillance systems, but couldn’t trace his identity.

"This... I think I know who he is. Alright, this matter ends here. Someone who can present such a basic yet almost completely correct foundational guiding method for the Yin-Yang Dao must be that person. I should have thought of this sooner."

Some senior staffs naturally possessed wisdom. Upon careful thought, they immediately found the answer.

Moreover, they soon issued an identity for the old gentleman, using his appearance, and deposited a large sum of money into his virtual bank account. Although they didn’t know if he would use it, it was at least a precaution.

As for who this old gentleman was, though some high-ranking individuals figured it out, they all had a bit of amazed understanding.

Yet, no one pointed it out directly.

Jia Yan also knew that since this avatar acted, his identity would easily be exposed. However, changing an identity was simple; he only needed a bit of brainwave power to switch identities.

Nevertheless, he did not do so.

He just behaved like a regular Earth person, took public transport, boarded a spaceship, and rode it.

Upon discovering that this identity now had an almost infinite money card, Jia Yan accepted it with a smile.

The spaceship he was riding was an extremely fast commercial spacecraft. Inside, there were some students and some business employees.

Here, Jia Yan found the feeling of taking buses back in the day.

The place was crowded, and even had aliens, although they weren’t particularly strong in stature or power.

"Ah, I almost overslept today. There’s only fifteen minutes left until work time. Flying from Asia to America on this bus spaceship takes at least ten minutes, then there’s another four-minute subway ride to the company. I’ll be late today."

"Uncle, me too. I only have half an hour before school, but my school is in the core. Once we get to the North Pole, I still need to take the orbital descent, and half an hour isn’t enough. Why isn’t the descending track supersonic? It frustrates me."

A group of people were complaining about transportation, and Jia Yan found it amusing.

Every era has its shortcomings; regular people won’t overly praise the advancements of an era.

"Indeed, the progress of the era..."

Jia Yan suddenly had an epiphany.

Indeed, an era will progress on its own. He merely needs to save the Earth at crucial moments, and now that Earth is on the right track, he only needs to watch quietly, being just a passerby. Earth will develop on its own...