Outside the classroom, three old men sat together, listening.

"The children of the Sword Immortal Family are still quite knowledgeable, and I think it is more than enough to teach this group of students!" said one of the old men, his name was Chang Sheng, and he was the vice president of the Imperial Sword Academy.

"There are a few students in this class who are still good, Luo Yin, Chang Wei, Ye Qinghe!" another old man flattered him, he was the chief professor of the Imperial Sword Academy, his name was Ye Hua.

In addition to Chang Sheng, there was also an old man in gray robe sitting next to him, and even Ye Hua didn't know his identity. This gray-robed old man just sat there casually, and he had a strong aura of a superior who was not angry and arrogant, which made Ye Hua cautious when he spoke, and he didn't dare to be careless.

"What do you think?" Chang Sheng looked at the gray-robed old man.

"Hmm. The gray-robed old man shook his feather fan lightly and replied noncommittally.

Ye Hua muttered in his heart, he didn't know what the identity of this gray-robed old man was, and he actually ignored Vice Dean Chang Sheng, his identity and status must not be simple, I am afraid that he is still above the dean of the Imperial Sword Academy, Ye Hua does not dare to say more.

These students in the classroom didn't know that someone was listening to the lecture outside, but it was rare that Chang Xin talked about some more substantive things today, and they all listened carefully.

Chang Xin straightened his chest slightly, his face showed a bit of pride, and said, "What I'm going to talk about today is the Thunder Fire Technique! In the study of the Thunder Fire Technique, the Sword Immortal Family is a well-deserved leader!"

"The thunder fire exercise is composed of two parts: heavenly thunder and earth fire, when activated, there will be a countercurrent in the body straight to the heavenly spirit cover, such as the thunder rolling in the sky, like the earth fire surging, the Dao power breeds internal force from the outside to the inside, refining the bones, warming the bloodline, it is the first generation of the sword immortal family to create, it is the most powerful bronze-level exercise!" ”

Chang Xin gushed endlessly.

The other students in the class listened with relish, but Yu Fei was a little careless, he was not interested in this set of exercises at all, and the cultivation of the Thunder Fire Exercise required to open up the two veins of Ren Du as the foundation, so that the Dao power was continuously transformed into internal force, and then opened up the Yin and Yang veins, absorbed the aura of heaven and earth, and finally opened the Yin and Yang veins to prevent the exercises from backing up the Feng Chi acupoints and causing a stroke, which was by no means a simple way to open up the Yin and Yang veins.

If it weren't for Luo Yin, for the sake of those few treasures of the Imperial Sword Academy, Yu Fei wouldn't have stayed here to listen to Chang Xin talk about these boring things. In his opinion, Chang Xin's course was simply full of errors and omissions, and he couldn't listen to it at all. It is ridiculous that a small thunder fire technique dares to claim to be the most powerful bronze exercise.

Chang Xin's gaze swept over everyone and landed on Yu Fei's body, Yu Fei had contradicted her before, didn't take her seriously at all, and made a bet with her, she had always secretly hated her. Seeing that Yu Fei didn't listen carefully at all, she sneered psychologically, and finally found a chance for her!

Chang Xin gushed about the knowledge of opening up the yin and yang dual-dimensional veins, Yu Fei was not interested at all, and simply lay on the table and fell asleep.

At this time, the vice president of Chang Sheng outside was a little unhappy, he glanced at the gray-robed old man next to him, there was a big man who came to listen to the class today, Yu Fei actually fell asleep at this time, this is simply a shame for them in the Imperial Sword Academy, I don't know what the name of this student is, if he knows, he must expel this student from the academy and never hire him!

The gray-robed old man didn't say anything, and Vice Dean Chang Sheng secretly breathed a sigh of relief.

Ye Hua said with a straight face on the side: "The martial arts apprentice class is inevitably mixed, I will definitely teach this student a good lesson after I go back! My parents spent so much money to send them to the Imperial Sword Academy, not to let them come and sleep!"

Chang Sheng nodded, Ye Hua was still very eye-catching.

Yu Fei actually fell asleep, Chang Xin's face sank even more, didn't the students below sleep that the course she taught was boring?

"Yu Fei!" Chang Xin walked up to Yu Fei and let out a deep sigh.

Yu Fei was sleeping and thinking, he hadn't slept well for a week in a row, he was still quite sleepy, and he barely opened his eyes: "What's the matter?"

Seeing Yu Fei being woken up by Chang Xin, a group of family disciples and students secretly snickered, what they wanted to see most was that Yu Fei was taught a lesson, who let Yu Fei rob the goddess in their hearts?

"It's miserable!"

Boya and they looked at each other and smiled bitterly, no matter what, they would never dare to do such a thing as sleeping in class, this time, even the gods couldn't save Yu Fei.

Yu Fei's attitude made Chang Xin even more annoyed, and said in a deep voice: "You actually sleep in my class, do you understand?"

"yes!" Yu Fei said calmly.

"You ......" Chang Xin was almost choked by Yu Fei and couldn't speak, since just now, Yu Fei has been sleeping, Yu Fei actually said that he understood everything, only the ghost believes this?

Chang Xin sneered a few times and said, "Since you understand everything, you can tell me what the Yin Dimension Pulse is and what the Yang Dimension Pulse is!"

Yu Fei squinted his eyes and said: "It starts from the inner side of the calf, goes up along the inner thigh to the abdomen, conforms to the Taiyin meridian of the foot, passes through the chest, and meets the Ren pulse in the neck, which is called the Yin Dimension Pulse; ”

The students below were a little stunned, they could answer such a difficult question when they were sleeping, but Ye Qinghe didn't think so, because she knew that Yu Fei was very knowledgeable, and this was just a small test.

"Very good!" Yu Fei's answer was beyond her expectations, but she was angry in her heart and continued to ask, "Let me ask you another question, how to cultivate the Thunder Fire Technique?"

Yu Fei said unhurriedly: "To cultivate the Thunder Fire Exercise, you need to open up the two veins of Ren Du as the foundation, so that the Dao power can be continuously transformed into internal force, and then open up the Yin and Yang veins, absorb the aura of heaven and earth, and finally open the Yin and Yang veins to prevent the exercises from backing up the Fengchi acupoints and causing a stroke." Moreover, this set of exercises is just a set of garbage exercises, which has no use value, and will not improve after learning the Dao power, but will be in danger of stroke. ”

Hearing Yu Fei's words, the whole class burst into laughter.

"Haha, I'm laughing to death, the teacher just said, just open the Yin Dimension Pulse and the Yang Dimension Pulse, this thing really didn't listen to the class!"

"I laughed so much that tears came out, he actually said that he would have a stroke, I think he is now having a stroke!"

Luo Yin couldn't help but laugh, and Chang Wei was a little angry, because Yu Fei actually said that the Thunder Fire Technique passed down by his Sword Immortal Family was a garbage exercise, which was simply unbearable! Among all of them, the calmest was Ye Qinghe, Ye Qinghe felt that Yu Fei was just good at hiding himself, and these people didn't know Yu Fei's true talent.

At this time, outside the classroom, Ye Hua also laughed and said, "This student is really ridiculous, he actually pretends to be smart and says that he needs to open six of the eight veins to practice the Thunder Fire Exercise, and he said that practicing the Thunder Fire Exercise will cause a stroke!"

When Ye Hua couldn't help laughing, he suddenly found that Vice Dean Chang Sheng and the gray-robed old man were not laughing, and his laughter suddenly stopped abruptly and suffocated back into his stomach.

"What's ridiculous, the Thunder Fire Exercise really has to open the six veins of Ren, Du, Yin Dimension, Yang Dimension, Yin Ji, and Yang Ji!" Vice Dean Chang Sheng said calmly, after in-depth study at their level, they will find that the fire qi of the Thunder Fire Gong Method spreads throughout the body, and cannot be discharged from the Yin and Yang veins, and needs the assistance of the Yin and Yang veins, and Ren Du and the second veins are the foundation, but he was a little surprised, this was actually said by a student!

Moreover, for a powerhouse of their realm, the Thunder Fire Exercise, a garbage exercise, is indeed at risk of a stroke, and it has little effect on actual combat.

A divine light flashed in the gray-robed old man's eyes, but he didn't say anything.

"Grandstanding!" Chang Xin snorted coldly, her face gloomy, as a member of the Sword Immortal Family, of course she couldn't tolerate someone belittling the Thunder Fire Technique in front of her.

Yu Fei didn't care about the ridicule of the students, and continued to talk eloquently, saying: "This set of exercises was originally recorded in the ninth volume of the Thunder Fire Miracle, and the real name should be the Thunder Fire Dao Angry Lotus Heart, up to the Heavenly Dao, down to the humane, thunder on the left, Tianhuo on the right, eight veins of reincarnation, thunder and fire constantly, composed of three parts: thunder, fire, and pulse, which is a bit complicated, and then I don't know which stupid hat, all the pulse techniques were deleted, and the thunder techniques were deleted, and the fire techniques were changed a few times, and it became this nondescript thunder and fire exercises." It is hard to turn this world's stunt into a garbage exercise that has no actual combat effect, and this set of garbage exercises is only for those seven or eight-year-old children to experiment and learn. ”

Thunder and fire miracles, what is that? The students looked at each other.