The spells recorded on the last page of the book include several spell formulas such as "Fireball Technique", "Fixation Talisman", "Wind Resistance", "Object Control Technique", "Heavenly Eye Technique", etc., and each of the formulas contained in these spells is so ancient and profound and difficult to comprehend for Lin Hao. It is no wonder that these oral duels are written in a relatively old vocabulary, although he has read a lot of books, but his knowledge in this area is really shallow, and he naturally cannot grasp the meaning at once. In desperation, Lin Hao took out the desperate energy of learning to refine qi at the beginning, and began to study the meaning contained in the mantra day and night, and repeatedly scrutinized and pondered every sentence and every word dozens of times to know that after thoroughly understanding it, he went to learn the next sentence, and he must truly understand the meaning of each sentence.

Even though he had never learned any spells before, he knew that if something went wrong with such a powerful spell, it would be much more powerful than some true anger going mad, and it would probably kill him all at once. For the sake of his own safety, Lin Hao was so trembling that he didn't dare to be sloppy. After half a year of in-depth study, Lin Hao finally integrated all these formulas theoretically, so he began to practice real spells. This study made Lin Hao understand what it means to be difficult.

He thought that with his own intelligence, it should not be too difficult to learn spells, but who knew that he suddenly became extremely stupid on this, and he knew the principle, but when he really got started, he couldn't do it correctly, either the technique was wrong, or the mana was not in place, and it seemed that the whole person was stupid. There is no way to do this, after Lin Hao's long time of hard practice, he finally learned a little success in the "Fireball Technique" and "Heavenly Eye Technique", but he didn't even touch the threshold of the other spells, and he didn't have the slightest effect. In his frustration, he had no choice but to focus on the spells that he could master now, such as the "Fire Bomb Technique" and the "Heavenly Eye Technique", and had a lot of hopes for them.

After studying kung fu for nearly half a year, he still couldn't fully grasp the essentials of it, so he saw Lin Hao raise a finger. After a while, at the fingertip half an inch high, there was a sudden fluctuation, and a few sparks appeared out of thin air, as soon as the spark appeared, it immediately "swooped", and it turned into an egg-sized red fireball in the space distortion for no reason, although the fireball was not big, but a hot high temperature, followed by the appearance of a small fireball, and permeated the entire room.

Time passed in a minute, the fireball still maintained its vitality, and there was no appearance of wanting to extinguish it, but Lin Hao couldn't hold on a little, his fingertips against the fireball trembled slightly, at first it was just a finger, but as time passed, the wrist, the whole arm, and even the whole body gradually trembled.

His eyes were fixed on the small fireball on his fingertips, and his face was flushed. There were a lot of small beads of sweat from his forehead to his neck, as if he had just done some strenuous exercise, and he was sweating all over his body. After a while, the fireball began to shake in the violent tremor of Lin Hao's whole body, and the flames began to grow larger and smaller for a while, unable to keep it calm, and it didn't take long for it to turn into sparks again and disappear into the air.

As soon as the fireball disappeared, Lin Hao lay back on the chair as if he had been drained, looking extremely tired, as if he had just done something that consumed a lot of physical strength. But the power of the "Fire Bomb Technique" really did not disappoint Lin Hao, and even far exceeded Lin Hao's expectations. Don't look at the small size of the fireball of the "Fire Bomb Technique", but the terrifying high temperature contained inside it is almost indestructible to everything, and everything is incombustible. Even if a blade made of steel is hit by this fireball, the parts it touches will be melted into iron in the blink of an eye.

After learning about the power of the "Fireball Technique", Lin Hao finally understood why Bi Jianxun looked down on mortals in the slightest. Think about it, an immortal cultivator who knows a little bit of magic can use a small spell like the "Fireball Technique" to easily kill the masters in the rivers and lakes. If it was replaced by an immortal cultivator with high mana power, then it would not sweep the entire rivers and lakes.