The class went by like that: Rad would ask something to the audience, and some would reply with their answers, only for Rad to correct them or praise their knowledge.

Thanks to their previous conversation, Xan was already familiar with most of the information Rad was sharing, allowing him to understand everything much more effortlessly than his companions.

Obviously, Rad didn't talk about cults or corruption in that class and stuck to ordinary cultivation information. After they had already talked for about an hour, Rad changed the subject of the conversation entirely.

"Ok, all this chit-chat is great, but it is time to start with the practical part of the class," he said as he stood up from the ground.

Xan began to hear many whispers in the crowd after hearing those words, a result of Rad's pupils becoming excited at the idea of cultivating.

For most of those kids, the idea of being able to cultivate was something that would never cross their minds. Being members of the second area, they didn't have the privileges to obtain easily cultivation-related information, so most of them had already accepted at such a young age that they would live the rest of their lives as commoners.

Now, thanks to Rad's decision to teach cultivation selflessly, they would have the chance to climb through the stages of cultivation while advancing through the areas of the fortress, meaning they have the opportunity to become relevant figures in the future.

"Ok, first of all, anyone knows how people start cultivating?" Rad asked the crowd, making it fall into silence.

As with the rest of the questions, a kid raised his hand, waiting for Rad to allow him to speak.

"With something called dantian, I think it is around the abdomen." the kid replied.

"Yes, and no. You are anticipating events." Rad replied while laughing." Cultivators indeed use the dantian to cultivate, and in fact, the dantian is in the abdomen, but before you can use it, you need to clean it."

"Clean it?" the kid that answered asked while tilting his head.

"Yes, clean. You can think about it as if it were a pipeline. But this pipeline can't simply let water flow because rubbish obstructs it. And to unclog it, you need to shoot water through it until the pressure you generate is enough to move the waste out." Rad explained.

"That wouldn't break the pipeline?" Asked another kid while raising his hand.

"First of all, I didn't give you permission to ask, so next time you interrupt me, you are out of the class," Rad said while looking intensely at the kid before smiling." But I have to admit that it is not a wrong question. Yes, a pipeline could break, but your dantian is not an actual pipeline. This is only a comparison to help you understand how cleaning your dantian works. So now, every single one of you will take a deep breath and hold it inside for a few seconds."

Hearing Rad's instructions, everyone in the backyard followed them as if their lives depended on it.

"Now, feel the heat inside your lungs. That's the energy you managed to gather from your surroundings while breathing. You need to concentrate on it, direct it toward your abdomen and try to make it enter your dantian. Don't worry if you fail to feel the heat. It is usual for everyone to fail the first few tries. With your dantians obstructed, your capacity to control energy is almost zero, so it would take you some time before you clean it thoroughly."

The dozens of kids stood still on the ground, focusing on their breathing while trying to feel the energy inside their bodies. The class continued for another hour until Rad's stomach started making noise.

"Well, it is lunchtime, so the class end's here. In three days, we will have another class right here at the same time as today. That day I will solve any doubts you have encountered and will continue teaching you the next steps of the cultivation journey if anyone has managed to clean their dantian. Until then, cultivate as hard as you can. Some of you may be more talented than others and feel they don't need to train as hard as they do, but don't get too cocky of yourselves. Even a beetle can beat a dragon with enough time and effort." Rad said before getting up from the ground and leaving the backyard.

As he left, the kids began talking among themselves to comment on their thoughts about the class.

"This was much better than I thought it would be," one said excitedly.

"Right? I thought he couldn't explain anything, but I understood most of the topics. Maybe he hadn't lost his teacher qualities even at such an old age." another replied.

"You will see. I will clean my dantian before anyone else and become Rad's best disciple!" another one said.

"No, I will be the first!"

Conversations like that erupted across the whole backyard, to which Xan could only react with a smile. He knew Rad would give him individual lessons to aid him in advance, so he was sure he would be one of the first to clean his dantian.

Not wanting to lose more time, he returned to his room.

'I need to start cultivating as soon as possible.' he thought.