Felix gently stroked the inner side of his wrist, where there was a flesh-colored pattern with no fingernail size. If you didn't get closer, you looked closely, few people would notice this pattern.

This pattern is actually an ancient magical circle with a small space hidden inside.

In the space, there is a spare magic wand.

After all, the pattern is too small and there are not many things that can be hidden. Moreover, this ancient magical circuit has always been closed and can only be opened if the conditions are met.

The condition to open is to apply a layer of your own blood.

This is his most secretive and difficult to detect at present.

When one day he is in a disadvantaged position, or is disarmed, loses his magic wand, or even his ring is stolen, this magical circuit will help him turn the tables.

As long as he is not killed on the spot, he has a chance to turn defeat into victory.

The ring on the left hand is in the light, and the magic circle on the inside of the right wrist is in the dark, one light and one dark, almost perfect.

Now, Felix is ​​still preparing to complete the construction of Cave 3.

The reason why he was so cautious was not because Hogwarts was a tiger's den, hiding something big, or what he was going to do, but because he knew that from the day he became the ancient demonic professor of Hogwarts, he would have officially intervened in the "plot".

With his shallow understanding of the plot, it was difficult for him to be foresighted, so he had to take precautions early.

He does not believe in the so-called "fairy tales" but only believes in his own strength.

However, no matter how hard he doesn't understand the plot, he still knows some of the most basic things.

For example, in the previous life, Harry Potter's adventure experience made eight movies, which is based on one film in one school year, which is the eight years in the magic world. This is in line with Felix's imagination: seven years of adventure in school, plus one year after graduation, it's fine.

Very rigorous reasoning.

It has been a school year now, and if nothing unexpected happens, Voldemort will completely die in seven years.

Thinking of this, Felix felt a little relieved.

Of course he is not Voldemort's opponent now, but the future is hard to say.

Felix walked out on the streets of London while planning his future strategy.

Half an hour later, he stood at the door of a dentist's clinic—the one he discovered a month ago.

Felix pushed the door open and the bell at the door made a crisp sound.

A middle-aged man in a white coat leaned his head and walked out of the inner room. He looked at Felix and asked, "Are you looking at the teeth?"

Felix replied briefly, “I want to fill my teeth.”

The dentist nodded and led him to a chair, "Please sit. My name is Will Granger, you can call me Dr. Granger."

"I'm Felix Happ."

Dr. Granger asked him to lie on the chair and looked at Felix's mouth with a searchlight-like thing, with a little confused face, "Mr. Hepp, your teeth are in good condition, very clean, and neat, and very symmetrical in size..."

Felix pointed to the upper left side of his cheek, "I want to repair a wisdom tooth."

Dr. Granger was stunned for a moment. This was a strange requirement. Wisdom teeth are of little use. He said sincerely: "Mr. Haip, I don't recommend you to repair a wisdom teeth because..."

Next, Dr. Granger showed his professionalism and taught him a full twenty minutes of dental knowledge.

During this period, a little girl with fluffy hair walked in. She was about twelve or thirteen years old. She glanced at the two of them, especially when she saw Dr. Granger's endless expression, she showed a "coming again" expression of lifelessness.

Finally, Felix had to interrupt him, "Doctor Granger, let's do it, you can help me make my teeth first, and I'll try it before deciding whether to fill it."

Dr. Granger thought it was very reasonable. He took out a pen and recorded the size of Felix's mouth. After stroking on the paper, he quickly confirmed the size and shape of the wisdom tooth.

Then he walked to the inner room and started working.

Felix looked at the furnishings of the clinic with interest, especially one of the walls was covered with small cabinets, and the enlarged teeth model could be clearly seen through the glass.

Just as he was watching attentively, a confident voice appeared on his left.

“Filling teeth is not the best choice, especially a dispensable wisdom tooth.”

Felix turned his head and looked at the little girl, then heard her add, "It will hurt."

"It hurts? How painful?"

"You need to drill a hole in your gum with a small drill bit, then drill holes in your artificial wisdom teeth, connect them with screws, then re-fix and adjust the position."

Felix suddenly had a toothache...

The little girl's popular science continues, "Even if the teeth are repaired is not a one-time solution. On the contrary, the gums will be more susceptible to damage after being damaged. Even if your oral habits are not good on weekdays, it will cause the gums to rot and spot, causing the original teeth to loosen and fall off, and must be repaired..."

"Stop talking!" He already had a picture.

Although he could use magic to repair and relieve pain, his mind is now traumatized.

Looking at Felix's discomfort expression, the little girl shook her long fluffy hair and ran to the corner to read a book. It could be seen that she seemed very happy.

Nearly twenty minutes later, Dr. Granger came out again.

He dragged a silver tray with an artificial polished and modified tooth on it.

"Looks great, right?" Dr. Granger praised his craft.

But Felix simply nodded, and he was frightened by what the little girl had just said!

Following Dr. Granger's instructions, he tried this artificial wisdom tooth, of course, without drilling or wire wrapping, just to test the comfort level.

"Very good!" Felix praised. "But I decided not to fill my teeth anymore."

"Is that? It seems you made the right decision." Dr. Granger was not angry about missing a business, but was happy for him.

However, the guest made a new request, "I want to buy this tooth as a souvenir."

"Memorial?" Another strange request was made. Doctor Granger thought to himself, even the little girl who was reading quietly on the side raised her head and looked at him.

"Yes, commemorate."

"Okay." In the end, Dr. Granger only charged the materials.

As Felix walked out of the clinic, Dr. Granger still felt something strange in his heart. He complained to his daughter, "A strange guest, do you think so, Hermione?"
Chapter completed!