Zhang Yu dared to come for the trial class, naturally brimming with confidence in his teaching. This confidence stemmed not only from the fact that the three techniques he was about to explain – Limitless Cloud Hand, Excavation Palm, and Racing Leg – had all reached Level 10, but also from his profound understanding of mana control after elevating the Celestial Cycle Qi Gathering Method and Limitless Cloud Hand to Level 10. Furthermore, after reaching Level 10 with the Thirty-Six Form Body Strengthening and Scarlet Marrow Primordial Qi, he had also gained a deep understanding of bodily structure and the force generation of muscles. Of course, the experience and insights brought by Level 10 techniques such as Limitless Cloud Hand, Imperishable Seal, Back-Dragon Overturning Mountain Hand, and Celestial Martial Heart Refinement Art, constantly elevated his martial arts skills. Unknowingly, Zhang Yu had reached an unimaginable level in terms of mana control, physical mastery, and martial arts techniques. And all these breakthroughs were achieved within the last two months or so. In other words, at this moment, he could still clearly remember the feeling of his techniques breaking through from Level 1 to Level 10 one by one, and he also remembered the difficulties, doubts, and confusions he had encountered as a novice cultivating these techniques.

With Zhang Yu’s knowledge and experience, explaining the various skills of Limitless Cloud Hand at this moment, he could often point out the key points in just a few words, and his casual remarks could contain insights that others could only gain after years of accumulation. Cai Tou, who had “One Lesson a Day” tattooed on his arm, had only cultivated Limitless Cloud Hand to Level 8. After listening to Zhang Yu’s explanation for a few minutes, he felt enlightened, as if a fog had lifted from his mind, and even felt an impulse to start practicing on the spot. In particular, Zhang Yu’s guidance and insights on Level 8 Limitless Cloud Hand made Cai Tou feel as if his words were speaking directly to his heart.

“Excellent, excellent, you’ve truly explained it wonderfully!” Cai Tou exclaimed, his eyebrows dancing with delight, “If Teacher Ma ever opens a Limitless Cloud Hand class in the future, I will definitely sign up for it.” Da Chan and Che Nv, who were standing beside him, exchanged glances, their eyes seemingly filled with surprise, as they had not expected Cai Tou to have such a high opinion of this Ma Yunteng.

After receiving Cai Tou’s praise, Zhang Yu looked at Che Nv again and said, “Then I will explain the Racing Leg next…” But at this moment, Hei Ya, who was standing beside him, suddenly said, “Teacher Ma, your lesson is very good, but if you could add a little something, it would be more popular here.”

Zhang Yu asked curiously, “Add what?”

Hei Ya: “A little bit of the teaching style of a key high school.”

Just as Zhang Yu was pondering what the teaching experience of a key high school was like, the doll hanging on his chest explained, “How did the teachers treat you when you were in key high school? Treat them the same way. Bring out the experience you gained from being educated in key high school.”

Zhang Yu seemed to understand, and then looked at the people in front of him and asked, “When I was in key high school, I taught sterilized students. I don’t know if the three of you are currently in a sterilized state, or if you have already had recovery surgery?”

Cai Tou said somewhat embarrassedly, “We all attended ordinary high schools. Sterilization was not required back then.”

Zhang Yu said “Oh”. Cai Tou, Che Nv, and Da Chan looked at Zhang Yu, who seemed to have been sterilized, and then looked at themselves, who had not been sterilized, and suddenly felt that they seemed to be inferior to him.

Zhang Yu simply brought out the experience he had at White Dragon High School and asked, “I see that there are toilets here. Do teachers and students need to use the toilets? Should we consider the students’ bathroom needs during class?”

The three looked at each other, and finally nodded in unison.

Zhang Yu asked curiously, “There’s another question I’ve always wanted to ask. Can’t we choose the flavor of the nootropic drugs here? I don’t seem to have smelled any.”

Cai Tou said somewhat awkwardly, “The conditions are limited. We don’t add nootropic drugs to the air circulation system here.”

Hei Ya, who was standing beside him, looked at him with bright eyes, thinking, “Yes, yes, that’s the taste, the taste of key high school students being insulted.”

Next, Zhang Yu became more and more adept at incorporating high school teaching experience into his lessons. He thought to himself, “Well, it’s not too difficult. Just repeat how the teachers at Songyang High School usually discriminate against low-scoring students, and how the White Dragon people and Ziyun people talk to the Songyang people.”

As Zhang Yu continued to explain Excavation Palm and Racing Leg, Che Nv and Da Chan discovered that Zhang Yu’s understanding of Excavation Palm and Racing Leg was no less than theirs. Moreover, he had a unique understanding of muscle force generation and mana circulation. What surprised them even more was that Zhang Yu was extremely familiar with the various key points of these two techniques from Level 1 to Level 10, as if he had just broken through not long ago. But of course, they knew that the other party could not have just cultivated these Level 10 techniques, which could only mean that the other party had extremely rich teaching experience and had guided various students in their breakthroughs at different levels of these two techniques.

Che Nv cupped her fists, the coldness on her face had disappeared, and she said with admiration, “Your teaching quality is extremely high, and your teaching style is mature. It is definitely more than enough to teach here.” Da Chan, who was standing beside her, did not speak, but also nodded slightly, acknowledging Che Nv’s statement. After all, in the dark tutoring world, teaching quality is king, and people in the gang admire those who have strong lecturing abilities. As for Zhang Yu’s teaching style, it was even more authentic and needless to say. Just the temperament of integrating the score-based contempt chain into his words, any casual sentence he said, it could be seen that he was not only high in martial arts level, but also came from a proper key high school.

Hei Ya thought to himself, “If we put up the sign of a retired key high school teacher, we will definitely be able to attract many students.”

But to say who was the most surprised from beginning to end was definitely not the three teachers of the Dark Learning Gang, nor Hei Ya, who was standing beside him, but the doll hanging on Zhang Yu’s chest.

“This guy has only learned Excavation Palm for a few days!”

“It seems that he learns techniques quickly, and it’s not just simply fast, but he truly understands them thoroughly, and can even melt various techniques into one furnace, truly controlling the power within.”

“Damn it…” the doll thought to himself, “How was this potential activated? Could it be that without me knowing, I have actually inadvertently mastered such a terrifying method of stimulating potential, which is why I created this peerless monster, Zhang Yu?”

“Doesn’t that mean I have the aptitude to become a Heretic God King?”

“Could it be precisely because of this that I was harmed by others?”

Then, Zhang Yu also slightly demonstrated the teaching level of Crane Claw and Elevator Vertical, which were naturally also recognized, and also made everyone admire his wide range of knowledge even more.

After sending Cai Tou and the other three away, Hei Ya began to discuss the specific teaching matters with Zhang Yu. Finally, under Hei Ya’s suggestion, the doll’s experience as a reference, and Zhang Yu’s own arrangements, the course schedule was determined.

But the first thing Hei Ya talked about was the tax issue, only to hear him explain, “It’s no problem if you don’t want to reveal your identity. You don’t have to buy the right to spread and teach the techniques, but you must pay taxes. We will withhold them here.”

“The tax is really too important. In the past, some gangs didn’t bother to manage these things, and let the teachers report the taxes themselves. But they encountered a fearless person who secretly didn’t pay taxes. In the end, the righteous god found out, and the entire gang was captured in one fell swoop. The entire gang went bankrupt and owed debts that they couldn’t repay for the rest of their lives. Now they are still working overtime in the company to pay off their debts. It is said that the overtime has been arranged until 200 years…”

Speaking of this, Hei Ya’s eyes also revealed a trace of fear, “So, the matter of paying taxes cannot be taken lightly. Our gang will be fully responsible for paying it for you, so you don’t have to worry about it. The tutoring fees that we usually calculate for you are all calculated after deducting the commission and then according to the after-tax amount.”

In addition to Limitless Cloud Hand, the most profitable courses are naturally Excavation Palm, Crane Claw, Racing Leg, and Elevator Vertical. Hei Ya said, “Teacher Ma, when will you be available to teach?”

Zhang Yu said, “The sooner the better.”

Hei Ya smiled slightly and said, “Okay, I happen to have an Excavation Palm class that needs a teacher. There are currently 59 students enrolled in the class. Each class is 60 minutes long, and we will give you 6500 per class. We have tentatively arranged 10 classes a week. What do you think?”

Zhang Yu’s heart skipped a beat when he heard this, and his breathing couldn’t help but become a little rapid. He thought to himself, “10 classes a week, that’s 65,000? Damn it, the dark tutoring world is really profitable!”

But Hei Ya looked at Zhang Yu without answering, and thought that Zhang Yu disliked the amount being too little. After all, a strong person who can cultivate so many martial arts to Level 10 is definitely at the peak of Qi refining level, and his income and expenses would not be low. So Hei Ya said, “After all, you have just come here. After your teaching quality is recognized, we will definitely be able to arrange more classes and more students, and your income will definitely increase a lot by then.”

Zhang Yu nodded and nodded, suppressing the eagerness in his heart, “When will the class start?”

Hei Ya: “Tomorrow.”

After leaving the park that night, Zhang Yu breathed a sigh of relief. He thought to himself, “In this way, with a weekly income of 65,000, if I teach well in the future and arrange more courses, my income can be even higher.”

Thinking of this, Zhang Yu really breathed a sigh of relief, feeling that the economic pressure on his shoulders had been reduced a lot.

“In this way, I have the money to eat Primordial Pills, and my physical strength can finally be improved quickly, and there is no problem in participating in sports competitions.”

At this time, the doll on his chest said, “How is it? I didn’t lie to you, did I? Where can a proper job earn money as quickly as mixing with the underworld?”

“And I am very clear about the various underworld and dark worlds in this Kunxu. With me helping you, your chances of climbing up will only be higher.”

Zhang Yu did not answer, but he had to admit that learning some intelligence about the dark world through this Heretic God was indeed helpful to his immortal path.

On the way back, in order to show his presence or continue to show Zhang Yu his importance, the doll reminded again, “Remember, Zhang Yu, the most important thing in doing illegal tutoring is that you can’t trust anyone.”

“Also, since you are doing this business, then don’t pity those who come to buy courses.”

“Almost all those who come to the dark tutoring world to buy courses are poor ghosts, but don’t worry about whether their money is borrowed, from selling houses, or from mortgaging organs. They buy and we sell, we didn’t force them. If they go bankrupt or jump off the building in the future, it’s their own fault for not having the money to cultivate immortals…”

In the next few days, Zhang Yu cultivated in the school during the day, and at night, he either cultivated in the unfinished building or taught classes in the Dark Learning Gang’s park. Finally, he had enough money to buy Primordial Pills again, and gradually began to take Primordial Pills every few days.