With ten days left to study, Charles was finally able to barely perform the rodless mantra that came in, but he just had to chant the mantra in a low voice.

"It's pretty good." Jack touched his head with satisfaction, "It's OK to do this."

"I remember there is a saying in you Muggles that the power of the force is mutual, right?"

Charles replied, "Yes, what's wrong?"

Jack pointed to the cliff in the distance and said, "Have you ever thought about what would happen if you used a flying spell on that mountain?"

Charles was stunned. This involved his own blind spot in knowledge.

Then Jack played with him.

The old man reached out toward the cliff, and the next moment, he flew to the other side of the cliff.

Charles looked confused as he watched his grandfather swing around the cliff like Spider-Man, and when he flew back, he seemed to use a throwing spell to slow down.

"Did you understand?" Jack asked.

Charles nodded silently.

"It's OK."

Jack restored the stones on the ground that were smashed by Charles' magic into a huge rock. He first cast a floating spell, jumped up and cast a flying spell at the opposite cliff, and then he flew over with the stones.

Jack said proudly after he came back: "Magic, it's amazing."

Charles continued to nod.

"Okay." Jack did a warm-up exercise, "It's time to teach you the Avada Sauvignon curse."

Charles shouted in surprise until now: "No! You really want to learn this? If you are discovered, you will really enter the Azka class!"

"It's okay." Jack didn't look like a joke, "Just don't let people discover it."

Charles had a black line and understood what he meant. Killing everyone he saw would mean no one saw it.

Jack said to him seriously: "Hogwarts is dangerous. No one can predict what the double-hole socket will do. No matter how unwilling you, you must have a life-saving dog stick."

Charles died, and finally survived and almost died again, so he cherished his life very much. After hesitating for a long time, he finally agreed.

He thought to himself that as long as he doesn't use it indiscriminately, he should be fine if he only uses it when saving his life.

Jack did not start talking to him about how to cast a spell, but sat down with him on the edge of the cliff. After a moment of silence, he said, "You know, I have seen your memory, but I haven't finished it."

Charles nodded.

Jack continued, "I can't tell you what these things are essentially, but I know that black magic can affect people's minds, but I don't know how it affects them."

"It's like the beach below. The water is shallow at the beginning. When you slowly move forward, the water will slowly become deeper and not easily noticed. It makes people feel that they can still move forward, but in the end it will suddenly turn into an abyss, which makes people fall into the air and can never float up again."

"There are people with particularly strong wills who are prepared from the beginning and can resist this temptation in their hearts, such as me."

"Your will... I can only say that I felt your pain at the beginning. This pain made me run away in panic and dared not go further."

"I believe that your will is enough to resist the influence of black magic."

Charles didn't speak, but sat there quietly like a stone man, watching the seagulls hovering on the sea.

Perhaps because of time travel, he always felt that he had clear and vague things about his previous life, and was very contradictory.

"Grandpa," he asked suddenly, "Why did you learn the Avada Sauvignon Curse?"

Jack was stunned for a moment, and turned into a stone man like him, and then replied for a long time: "The excuse I gave myself at that time was to comfort my friend."

"At that time, he had just experienced the biggest tragedy in his life..."

"Ah... Looking back now, it seems that everyone is wrong."

He said, touching Charles' head and continued, "Child, if you have any ideas in your heart, you should say them out, communicate more, understand each other, and be more tolerant."

Although Charles didn't understand what had happened before, he understood what the old man meant and nodded gently.

"Get up," Jack stood up, "and started to learn. The black magic spells, including the Avadasauri, all have one thing in common. The caster must be determined when casting the spell. He said that if he wants to kill the other person, he must kill the other person. The curse with a bad tone is just a light punch."

"That is to say..." He found an adjective that Charles easily understood, "A arrogant person cannot use this kind of curse well."

Charles understood it completely now.

"Three days." Jack stretched out his three fingers, "I only teach you this spell for three days. If you have talent, you can master it in these three days. If you can't master it for thirty years, you won't be able to learn it for thirty years."

"After this time, I will teach you some fighting skills."

Charles began to learn the Avadasaueri curse**********," he found something was wrong when he saw the old man demonstrate, "Isn't this curse green? Why did it turn red?"

Jack said unexpectedly: "Aren't you afraid of entering Azkaban, so I changed my color."

Charles shook his head and said, "But this looks almost the same as the pirated mantra."

Jack thought about it and said that it was true. The difference between using the killing curse and the heart-drilling curse was just that he went to Azkaban to live in a single-digit room or a double-digit room.

"Then I think about it." Jack thought about it, "You go and play for a while."

Instead of going to play, Charles went to the kitchen to prepare lunch.

Lunch is very simple, traditional fried fish and fries. If you see this meal just after traveling through time, you will definitely not be able to tell whether Germany is still bombing the UK.

During lunch, Jack said happily: "I have solved the problem. No one can tell that it is the Avadassauri mantra, and it will not be regarded as a pyrotechnic mantra."

Charles breathed a sigh of relief and admired the old man's magical achievements in his heart.

Just after lunch, when Jack demonstrated Avadasaumind change, Charles almost vomited an old blood.

"Why is it a colorful rainbow color?" Charles' mouth twitched, "This is...ah...I don't know what to say."

Seeing that he was dissatisfied with that dissatisfied, Jack said angrily: "Will it be pink?"

Charles' cold sweat suddenly came out and he hurriedly said, "It's just a rainbow, it's pretty good."

"Hmph!" The old man continued to be angry, "I will teach you pink!"

"Okay." Charles looked dejected, "Then I will ask the previous principals with your wand, and say that the Avadassauer used by the owner of this wand is pink."

Jack was almost pissed to death by him.

Eventually, Charles began to learn Avadasaumin Rainbow.
Chapter completed!