No one can disturb my retirement life in the Red Mansion

"Miss Foster!" a curse came over.

At this time, Ou Mengmeng did not move. The various magic weapons on her body were not for fun. Many of them could block several evil curses. At this time, "Little Penny" looked cruel and optimistic. She smiled, but her hands were firmly pressed on the dagger. And her whole body was lying on the snake.

Even though the snake named Nani struggled violently, she remained unmoved. Even when Nani slowly stopped moving, she still held the dagger tightly. She knew that even if the snake was beheaded, it could still bite the nearest creature to death with its last bit of willpower. She would not give it a chance to counterattack her.

Just now, she saw that the mysterious man's attention was on Harry, and Nani had some wisdom, but not much, and its wisdom was also in the mysterious man, and it was synchronized with the mysterious man. That's why Ou Mengmeng took out the dagger.

Nani had been by her side for most of the day, and was used to her talking with all her features flying around and her hands and feet dancing. So when she took out the dagger with a strong poison and inserted it into its forehead, it was almost unconscious.

This dagger has a mechanism, because she has read in the book that it is not so easy to kill a soul fragment. She is not the protagonist, so she can't have a basilisk's fangs around her. Or someone will send her the sword of Gryffindor.

Therefore, it is known that there are certain things that can kill soul fragments, such as raging fire, strong poison, and the fairy's sword.

Ou Mengmeng knew the Fire Curse, but she was afraid of death. If she didn't use it well, she would burn herself. It would be bad. She happened to find a dagger made by fairies in an unknown era in the Room of Requirement. After repairing it, she also made some changes, adding the neurotoxin she extracted from the venom of the eight-eyed spider.

No matter what time, Ou Mengmeng is still a scholar, and he must always explain these magical problems in a scientific way.

For example, she used circuit boards to explain magic runes, and in her opinion, spells had a programmatic meaning.

When it came to killing the soul fragment, although she didn't dare to use Harry for experiments, she still used the notebook to experiment from time to time. The others were quite expensive, only the notebook was cheap. Otherwise, why would the notebook still be there after being placed in the silver box for two or three years? She must have left it there on purpose. Otherwise, what would she use for experiments?

Poisoning was the method that Ou Mengmeng first decided on. She told Agatha that women like to use poison to kill people because of their physical condition. To use poison, they just need to use their brains and don't need to use much strength. It is especially suitable for opponents who are stronger than themselves.

Ou Mengmeng never underestimates her opponents, so she resolutely does not despise women who use poison.

Since she knew that the soul fragment reacted to the basilisk's poison, although she couldn't get the basilisk's poison, she could analyze what was in the venom.

For example, the first thing in snake venom is neurotoxin, which can act on neurons, muscles and neuromuscular junctions, causing neuromuscular conduction disorders or even paralysis. When neuromuscular conduction is blocked, it can cause respiratory muscle paralysis in severe cases, leading to respiratory failure and death.

The second is thrombin: the thrombin in snake venom can cause blood to coagulate quickly, forming multiple blood clots. These blood clots disrupt normal blood circulation, resulting in the restriction of the ability to supply oxygen and nutrients, and eventually leading to organ failure.

She has a biological laboratory in the Muggle world, so she chose synthetic toxins from the Muggle world and the toxin extract of the eight-eyed spider. Then she tried them one by one, mainly because she was afraid that the soul fragments could not be explained by science after all, and using magic venom might be more convincing.

Of course, in the experiment, there was no difference between the two. Both burned a big hole in the laptop. Although there was only one drop, the damage to the soul fragment in the test was similar.

But in the end, Ou Mengmeng still chose the eight-eyed spider venom. This was not out of respect for the soul fragment. One ounce of eight-eyed spider venom cost one hundred gold galleons, which is five hundred pounds. After extraction, it takes less than five ounces to inject into the dagger. That's only 2500 pounds. This is very expensive in the magic world, but her scientifically synthesized toxins are more expensive, and they are sold by the gram. For cost considerations, she still chose the more economical eight-eyed spider venom.

So, she thrust the dagger into Nani's right eye and pressed the button to inject the venom. She didn't care where the soul fragment was. She only knew that she was attacking with two prongs. The dagger was inserted diagonally, entering the snake's brain protected by the skull from the eye socket. Even if there was no soul fragment, the snake would die if it was pressed for a few minutes. What's more, she injected five ounces (more than 140 grams) of venom and extracted the concentrated liquid.

Three to five milligrams of the toxin would kill an adult male within minutes. Basically, the researchers said, the toxin in her dagger was enough to kill several elephants.

But this did not reassure her, so she asked Hagrid to help her catch a snake of similar size in the magical jungle. It can be said that she was well prepared for killing snakes, including the angle of the dagger.

Therefore, she could escape, but she couldn't fail to make preparations. She would never let herself fall into an uncontrollable situation.

Now, even the angry ugly baby above knew that she was sitting next to Nani not because she was not afraid, but because she was really looking for an opportunity to make Nani get used to her and slowly let down his guard.

The fairy's dagger, coupled with the eight-eyed spider's venom, and she pressed Nani's head tightly, making it unable to move, there was no possibility of survival. Now Nani is dead, and now only a residual soul.

A wand was placed in Harry's hand, "You can have your revenge."

Harry and the others didn't bring their wands with them, so at this moment, Ou Mengmeng would not steal the limelight from the protagonist, so the final battle was destined to take place in Hogwarts.

Neville watched and rushed to Ou Mengmeng. He also wanted revenge, and he had waited for this opportunity for too long.

Ou Mengmeng also gave him one. This is the advantage of having many wands. They had never tried it with Ou Mengmeng before. The wand Neville used before was also his mother's. It was not that she was reluctant to buy one for him, but the old lady felt that there should be a legacy.

Ou Mengmeng did let Neville try out the ones she had, and just like the ones she gave to Ron and Ginny before, there was always one that worked. The same was true for the one Harry was using at this time, which always worked.

"Ms. Foster, do you think you won?" The ugly baby's voice rustled.

"No, I never dare to look down on anyone easily. I just told you!" Ou Mengmeng smiled at the ugly baby and winked at Neville.

Neville was no longer stupid, and returned along the same route. He had to go call for help!

Ou Mengmeng didn't dare to put all her hopes on Dumbledore, although the original book actually hinted that Dumbledore knew about this place, otherwise, the phoenix Fawkes would fly over with a hat in his hand. The phoenix pecked out the eyes of the basilisk and saved Ginny with its tears. All these actually showed that this was just a test given to Harry by the old man. (End of this chapter)