With that, Yu Hongyun left. In his opinion, since Feng Yin had already agreed, he naturally did not need to be an eyesore here.
Many new students would not understand that the challenges these seniors faced after these new students entered the school were for the good of these new students. To put it bluntly, if it wasn't the top of freshmen, the seniors from the previous batch wouldn't even be bothered to challenge you.
In the eyes of these seniors, challenging those with insufficient talent was purely a waste of time. Therefore, being able to be challenged by seniors was also a proof of the new students' talent.
Three days passed very quickly. Feng Yin had also learned that martial technique from Yu Hongyun's secret realm. The name of the martial technique was "Extreme Collapse". This martial technique was very simple. It taught people to use the hidden power in their bodies to cause greater damage.
Although it was called a martial technique, it actually looked more like a technique.
However, thinking about it, Yu Hongyun was only a sophomore. It was already very rare for him to have his own mystic realm. If he wanted a more powerful martial technique mystic realm, it was probably not something a sophomore like him could do.
After learning a new martial arts technique, Feng Yin did not even think about it and directly used the credits he had earned from selling medicinal pills during this period of time. He pushed Extreme Collapse's level to Greater Mastery, but he did not choose to reach the highest level. It was not that he did not have credit points.
Instead, Feng Yin wanted to leave the remaining credits behind as a backup in case he could obtain better martial arts techniques after entering the academy. He would not end up in an awkward position without credits.
Extreme Collapse was an Upper Yellow Rank martial technique. There was no need to cultivate it to a high level. It was enough to master it and unleash it.
During these three days, Feng Yin did not raise his level. Before Dang Hongfei left, he told him to try his best not to raise his level.
Martial Master was a very crucial realm. It was best to advance this realm in the martial arts academy with the help of teachers. Every teacher had different requirements for their disciples. Of course, if Feng Yin had a clear plan for his future development, he could also choose to continue improving.
When Feng Yin understood the situation, he gave up after some thought. The base city he was in was too small, and the highest-ranking person in the base city had yet to break through to the Warrior Realm.
As for him, as a student of the three martial arts academies, as long as he could graduate from the three martial arts academies, he would be at the Warrior Realm.
Outstanding graduates could even reach the strength of a Marquis.
Feng Yin's future was destined to surpass Langya Base City. Naturally, he could not ask the experts in Langya Base City how to develop in the future.
Feng Yin, who was thinking about what would happen next, finally saw his senior, Yu Hongyun, who was late.
"Senior is here."
Feng Yin looked at Yu Hongyun and nodded his head in greeting. He still didn't know why Yu Hongyun had invited him to a battle for his own good.
However, Song Yusheng had no reason to lie to him. There must be something that he, as a freshman, did not know. Moreover, this place could not be known before he officially entered the school, so Feng Yin did not think too much about it. When facing Yu Hongyun, he only maintained the most basic attitude.
"Hello, Junior Feng." Yu Hongyun nodded at Feng Yin. After walking past Feng Yin, he saw that Feng Yin did not follow him. Only then did he remember that Feng Yin was a freshman and did not understand many things. He called out to him. "Follow me.
"I think in a few days, my classmates and seniors of the same level will return from the Myriad Races' Battlefield. At that time, there will be many people who will challenge Student Feng every day.
"At that time, if you see them walk forward after they greet you, just follow them. The place where we really fight is in the mystic realm.
"Some mystic realms are combined with many others, while others are single-person mystic realms. For example, the Phantom Fairy Mystic Realm I'll bring you to later is a single-person mystic realm. The two of us will be separated.
"You'll know when you encounter a secret realm with many people. Student Feng, you have to remember this. In the secret realm, you have to be wary of everyone except yourself. I've said too much," Yu Hongyun muttered. Then, he forcefully changed the topic and continued.
"Let's return to the topic just now. Just keep up with my pace. You can't go to the mystic realm yet. The key I gave you previously is just a one-time use key to comprehend the martial techniques in the mystic realm.
"If you have a mystic realm with martial techniques in the future, you can make as many as you want. It's not very rare, but if we want to enter the mystic realm with our true bodies, we have to enter the academy's mystic realm square."
As he spoke, Feng Yin had already arrived at the mystic realm square under Yu Hongyun's lead. As soon as he entered, he could see countless Black Hole Mystic Holes. Those black holes had shrunk to the size of a palm.
The black hole at the entrance kept spinning inward, as if it wanted to suck people into the abyss.
Feng Yin stood at the entrance and glanced at the Black Hole Mystic Realms. He asked Yu Hongyun curiously, "Senior, how can we tell if these black holes belong to anyone?"
"Actually, it's very distinguishable. Look carefully at the bottom of these black holes. If there's a circle of white light at the bottom of the black holes, it means that it has an owner. If not, it's a public mystic realm without an owner."
As Yu Hongyun spoke, he stretched out his hand and tapped on one of the Mystic Realm Black Holes that was dotted with white halos.
"If you still can't tell, click like me. If there's an owner, the owner of the mystic realm will be able to know that someone is trying to enter the mystic realm under his control later. You'll be able to receive the news."
As Yu Hongyun spoke, the holo-brain button on his collar lit up with a blue screen. "Yu Hongyun, why are you using my mystic realm! If you touch it again, I'll chop off your hand!"
Yu Hongyun calmly extinguished the light screen. He looked at Feng Yin and said, "Look, just like what happened."
"Okay, I understand." Feng Yin watched Yu Hongyun's operation and silently said "amazing" in his heart. He nodded and didn't say anything else.
Not long after, the two of them arrived in front of the black hole controlled by Yu Hongyun. Yu Hongyun stretched out his hand and pointed at the black hole. Then, he confirmed that he wanted to compete with Feng Yin.
The moment he clicked on the information, the entire black hole immediately spread out in all directions, expanding until it could accommodate people to pass through. Only then did it stop.
Feng Yin first waited for Yu Hongyun to walk in. When he saw that there was no problem, he followed him into the black hole. The next second after he completely entered the black hole, the entire black hole returned to the size of a palm.
If not for everything that had just happened here, no one would have known that there were two people fighting in this mystic realm.