Zhang Yu meticulously studied the “Grievous Spirit Art,” a cultivation manual he had just acquired on his phone.

This top-tier, expert-level technique, requiring the cultivation of resentment, had plummeted in price, allowing Zhang Yu to purchase it for a mere 500,000 yuan.

After a thorough review, Zhang Yu planned to commence body refinement according to the methods described.

He touched the employee ID card hanging from his neck, emblazoned with the words “Frontline Employee,” which was constantly absorbing the surging resentment in the air.

This ID card-like object was none other than the external spiritual root, the Grievous Spirit Root, sent by Zhou Chechen’s people.

Its form as an employee ID was said to facilitate the storage of resentment.

As Zhang Yu channeled his mana into the Grievous Spirit Root, the world transformed dramatically in his perception.

The previously tranquil and peaceful Songyang High School was now shrouded in wisps of black energy, with distorted and struggling faces swirling within, emitting ghostly wails.

“This is… resentment?”

Zhang Yu knew that resentment was a remnant of humanity’s negative emotions, commonly found in the Kunxu world’s graveyards, schools, and companies.

However, schools and companies, teeming with living people constantly generating resentment, far surpassed graveyards in quantity.

The advantage of graveyards lay in the purity and age of the resentment, making it of higher quality than that of schools and companies. Therefore, the resentment of the deceased was more versatile and fetched a higher price.

Zhang Yu mused, “According to Fu Ji, if a family has enough ancestral graves dating back far enough, they can earn a substantial income just by renting out the graveyards as cultivation sites!”

“Alas, having an elder at home is like possessing a treasure! Unfortunately, the original Zhang Yu’s ancestors couldn’t even afford the body disposal fee, let alone buy a graveyard!”

He controlled the Grievous Spirit Root, taking a deep breath, and felt wisps of resentment pouring into his nostrils!

Instantly, waves of intense anger, humiliation, regret, despair… assaulted Zhang Yu’s mind, allowing him to experience the powerful negative emotions of countless underachieving students facing poor rankings, declining grades, and insults.

Zhang Yu quickly circulated the Residual Ox Sacrifice Heart Sutra to resist the onslaught of negative emotions and began to refine the resentment according to the Grievous Spirit Art.

The method of cultivating the Grievous Spirit Art was to absorb resentment, cleanse it of its specific emotions, retain the pure baleful aura, and then imitate the corpse refinement method to temper one’s skin and flesh, ultimately forging a body of bronze-armored zombie skin impervious to blades.

After several minutes, Zhang Yu stumbled through the first round of cultivation and felt a subtle coolness emanating from the palm-sized patch of skin on his chest!

He thought to himself, “If I follow the normal progression, it will probably take a year or so to achieve anything with this technique!”

“Thankfully, the Feather Book, through my efforts, can quickly cultivate this technique!”

Zhang Yu looked up and saw that the Grievous Spirit Art displayed on the Feather Book had changed from Level 0 (0/1) to Level 1 (2/10). The ultimate effect of the High School Sacred Body was that Zhang Yu’s cultivation of any Qi Refining stage technique was equivalent to three times the normal effect!

This was precisely the reason he was confident that he could cultivate frantically for the next three months, gradually supplementing the foundation of his Martial Dao Sacred Embryo!

A dozen minutes later, as he completed round after round of Grievous Spirit Art cultivation, a thunderclap seemed to erupt in Zhang Yu’s mind, and images of baleful aura tempering the skin on his chest flashed before his eyes.

At the same time, he felt something like a living creature growing fiercely beneath the skin of his chest, tightly enveloping it like a thin membrane!

“Grievous Spirit Art Level 1 is complete!”

Zhang Yu slowly recalled the cultivation memories in his mind and sensed the changes in his body, thinking to himself, “Each level of the Grievous Spirit Art involves tempering different parts of the skin and flesh. Ultimately, at Level 10, I will forge a body of bronze-armored zombie skin, like a suit of armor worn close to the body, greatly increasing my physical defenses!”

After a moment of contemplation, Zhang Yu continued to cultivate, intending to seize the time to push the Grievous Spirit Art to Level 10!

Time flew by as Zhang Yu cultivated, and in the blink of an eye, it was time to leave school, and night descended!

Under the night sky, 999 silver needles, flashing with electricity, pierced into different locations all over Bai Zhenzhen’s body, from top to bottom!

As Bai Zhenzhen circulated the Thunderclap True Body, she could see the electric arcs dancing on the silver needles, constantly stimulating the nerves and muscles all over her body!

Bai Zhenzhen could feel that, in addition to the increase in physical strength, the nerves that had not grown for a long time were now, under the effect of the Profound Thunder Electric Moxibustion Needle Array, starting a new round of growth, like withered trees sprouting in spring!

This helped her to master her body more deeply, meticulously, and rapidly!

If the original Thunderclap True Body was only a second-rate, expert-level body refining technique, then after the True Spirit Root’s deduction, the addition of thunderous mana, and the assistance of the Thunder Electric Moxibustion Needle Array, it had the effect of a top-tier expert-level body refining technique!

Suddenly, the electric arcs began to weaken!

The voice of the artifact spirit came from the needle box: “Low battery, please charge the user in time!”

Temporarily withdrawing the 999 silver needles, Bai Zhenzhen looked at Zhang Yu next to her and said, “Yu Zi, are you ready to go to the Dark Learning Syndicate?”

Zhang Yu, who was cultivating the Grievous Spirit Art, slowly opened his eyes, a trace of baleful aura flashing past!

After cultivating throughout the day, he had already pushed the Grievous Spirit Art to Level 8 (15/90)!

At this moment, Zhang Yu could feel that all over his body, except for his face, a thin membrane seemed to have grown beneath the skin, which did not affect his actions normally, but as soon as he exerted force, this membrane would protect his body like a suit of iron armor!

Fu Ji, who was next to him, sensed the changes in Zhang Yu’s body, especially the faint, dense patterns on the exposed skin of his arms, and she exclaimed in her heart, “This guy’s Grievous Spirit Art is progressing so fast.”

“How do I feel like he has almost completed this technique in just one day!”

“As expected, after the last time his potential was stimulated again, Zhang’s talent has become even more terrifying!”

“Hehehe, good, good, good, once he passes the High School Foundation Establishment Certificate and goes to the second floor, the sky’s the limit!”

Zhang Yu slowly stood up, twisted his dry, stiff skin, nodded, and said, “Let’s go!”

However, before leaving, Bai Zhenzhen returned the Profound Thunder Electric Moxibustion Needle Array to charge!

Leaving the school gate, Zhang Yu and Bai Zhenzhen moved quickly, each using their movement techniques, found a place to change their appearance and disguise their faces, and then sped towards the Dark Learning Syndicate’s base!

When Zhang Yu and Bai Zhenzhen arrived outside the park as Ma Yunteng and Yue Mulan, two tutoring teachers!

The two were surprised to find that the brightly lit park was filled with the security teams of Xianyun Group coming in and out, and the constables were assisting them in escorting the members of the Dark Learning Syndicate out!

One of the gang teachers with a gray face and swollen face cried out, “It’s my first time here to tutor people, really the first time!”

The constable next to him snorted, “Does your family know that you are doing illegal things here?”

The teacher said with a mournful face: “It has nothing to do with my family, they trust me very much, and they don’t know that I will come to do this kind of thing!”

“I was temporarily bewitched and wanted to make some quick money, thinking that it wouldn’t matter if I tutored once or twice!”

“I really know that I’m wrong, I’m sorry to my parents, they gave birth to me, not to let me illegally tutor people!”

“Please let me go, I really have no money to pay…”

Another old constable next to him reminded, “The names, identities, and motives of these people in the dark tutoring world are all made up, and there is not a word of truth in their mouths. You can’t believe a word of what they say. You will know more about it in the future!”

In the distance, Zhang Yu, hiding in the shadows, exclaimed, “The Dark Learning Syndicate has been wiped out?”

Bai Zhenzhen said helplessly, “What should we do now? Should we find another gang and start all over again?”

Fu Ji reminded, “Don’t you have the contact information of that middleman from the Dark Learning Syndicate, that Crow?”

“Contact him and see!”

“The Dark Learning Syndicate is not small, the destruction of one park doesn’t mean that the gang is gone!”

Zhang Yu also remembered that he had added a friend in the Kun God world and could contact the middleman named Crow!

So Zhang Yu opened the Kun God world on his phone, and soon he contacted Crow!

After some exchanges, Zhang Yu learned that the dark tutoring world in Songyang City was recently surging with undercurrents!

In particular, the fighting between the Dark Learning Syndicate and the Golden Lesson Syndicate was becoming more and more serious, with various acts of stealing course outlines, burning teaching materials, assassinating gold medal teachers, and reporting tutoring locations emerging one after another!

As far as Zhang Yu knew, the backers of these two gangs were the Deep Sea Education Group and the Xianyun Education Group respectively!

Zhang Yu thought to himself, “The Dark Learning Syndicate and the Golden Lesson Syndicate are fighting so fiercely, does it mean that the contradictions between the Deep Sea Group and the Xianyun Group behind them have also escalated?”

For some reason, Zhang Yu always had a feeling that since this year, the companies in the entire Songyang City had revealed a kind of impatience, a feeling that the intensity of competition was constantly escalating!

Temporarily suppressing the speculation about the situation in Songyang, Zhang Yu still focused his attention on the situation of the Dark Learning Syndicate!

Zhang Yu said, “According to Crow, with the fighting between the two gangs, many gold medal teachers in the Dark Learning Syndicate have fallen, so they have been recruiting masters to give lectures or participate in gang fights!”

Bai Zhenzhen asked, “If we give lectures, what kind of courses make money now? Can the techniques I know earn a lot of money?”

“I feel that it’s not fast enough to make money by tutoring high school students or construction workers!”

Zhang Yu asked Crow, and the other party sent over a dynamic poster!

The poster showed a group of white-haired old men diligently studying and cultivating, and one of the energetic old men said aloud, “At 90 years old, I have old people above me and young people below me. It is the age to break through and strive!”

“I want to take my 130-year-old parents to eat pre-made meals, I want to sign up for tutoring classes for my 60-year-old son, I want to help my 30-year-old grandson rent a sewer house next to the subway, and I want my 5-year-old great-granddaughter to be able to enter a key kindergarten. How can I stop learning? How can I be eliminated from the workplace?”

“In ancient times, there were 100-year-old prime ministers who recovered mountains and rivers, there were 500-year-old great demons who transformed into human form, there were 1,000-year-old great demons who transformed into human form, and there were 1,000-year-old old grandmothers who married immortals!”

The old man in the poster clenched his fists and shouted full of fighting spirit: “Strive, it’s never too late, no matter how old you are.”