Since the beginning of December, Hogwarts students have recently noticed some new changes in their classrooms.

In Potions class, Professor Snape's lectures were much more detailed than before, and his mouth was less venomous.

If it weren't for the fact that his hair had always been greasy and unwashed, the students wondered if this Professor Snape was fake.

In other classes, Hagrid is sometimes seen sitting in the back row of the classroom, occasionally joting down something in a notebook.

"Because Professor Dumbledore has spoken to them."

When talking about this topic with his classmates in the common room, Professor Zhang said.

The Christmas holidays are just around the corner, and a group of students quickly shifts the conversation to the upcoming holidays.

Zhang Xu has already asked someone to help book a plane ticket back to China, and he will leave as soon as the holiday arrives, even if Voldemort attacks Hogwarts with the Death Eaters, he can't stop him.

☁🌙☁ Dividing line ☁🌙☁

"You have a new SMS, please pay attention to check!" ×N

Zhang Xu, who was asleep, was woken up by a bell.

I got up in a daze, and found that it was the professor's communicator ringing.

In the middle of the night, someone was called up, and it was definitely not someone who was looking for him to see the moon with red wine.

Zhang Xu took the communicator and found that it was a text message from Dumbledore, telling him to rush to the headmaster's office immediately.

Zhang Xu, who suddenly remembered what was going on, immediately put on a robe, wiped his face with a wet towel with his magic wand, and ran out of the dormitory.

Arriving at the door of the principal's office, Zhang Xu saw Professor McGonagall walking anxiously with a group of red heads, and Percy was inside.

Behind this group of redheads, followed by Scarlet, who had rushed over with him.

Walking into the office, Dumbledore immediately said to Zhang Xu: "Zhang, Arthur is seriously injured, the news from St. Mungo is not optimistic, I need your help." ”

After Zhang Xu nodded immediately, Dumbledore continued: "Halleson, please bring Zhang to St. Mungo, and I will ask Talis to inform St. Mungo's healer to cooperate with you." ”

Hearing that the situation was urgent, Zhang Xu and Scarlet didn't say much, and turned around and left after answering the "yes".

After the two walked quickly out of Hogwarts, Scarlet grabbed Zhang Xu's hand and led him to St. Mungo's Hospital for Magical Injuries and Injuries with a phantasmagion.

Dumbledore knew that Zhang Xu had hole cards in detoxification, so he learned from Harry that Arthur Weasley was bitten by a snake, and from the portrait of Duris Devonte, Arthur Weasley's wound was tricky, so he asked Zhang Xu to help.

Zhang Xu had already remembered just now that Mr. Weasley had been bitten by Voldemort's snake tonight, so he agreed to Dumbledore's request without saying a word.

Arriving at St. Mungo's Hospital for Magical Injuries and Injuries, under the guidance of the therapist waiting for them in the hall, Zhang Xu and Scarlet arrived at the medical room where Mr. Weasley was being treated.

Zhang Xu walked into the medical room, while Scarlet waited outside.

Mr. Weasley was lying in a hospital bed, his shirt had been removed. His face was sickly pale from blood loss.

Several therapists are using various methods to stop the bleeding from Mr. Weasley's wound in the ribs.

A bucket beside the bedside was almost filled with gauze stained red with blood.

Seeing Zhang Xu come in, a man who seemed to be looking at the attending therapist walked over.

Although the reinforcements sent by Dumbledore were excessively young, the healer did not take them lightly.

After all, Lao Deng's signboard is there, and they believe in Lao Deng more than they believe in themselves on technical issues.

There was no such thing as questioning→ arguing→ slapping → head and bowing to the → patient's death due to the delay in rescue time, and the therapist immediately introduced Mr. Weasley's condition to Zhang Xu.

"The patient's wound appeared to be bitten by a huge snake, his ribs were bitten off, and the wound could not stop the bleeding because of the toxin." The therapist frowned and said, "At the moment, the patient has lost too much blood and is in a dangerous situation. The patient's body is very weak, and it is difficult for the blood tonic medicine to work. ”

"I'll take care of the toxin." Zhang Xu said, "You can try to stop the bleeding by local freezing." ”

"If I can, I recommend giving a blood transfusion to the patient to avoid death due to excessive blood loss."

"Muggle methods?" The therapist asked, "Would you use this method?" I think we can try. ”

"I won't, but I can find someone who will." Zhang Xu said, "That person is the parent of a Hogwarts student. ”

Zhang Xu remembers hearing Hermione say that her father was a dentist and her mother was an internist, and they had never eaten pork or seen a pig running.

The Granger and Weasleys have a good relationship, and I'm sure they'll help.

And they are the parents of wizards, so they don't have to worry about being erased by the people at the Ministry of Magic.

Zhang Xu took out a black box with a thick rubber wrap on the outside, which was an anti-magic interference box, which could ensure that the electronic products inside would not be damaged by magic interference.

Zhang Xu gave the box and phone number book to Scarlett and asked her to contact the Granger couple as soon as she left St. Mungo's Hospital and asked them to come over and help.

The therapists began to stop Mr. Weasley's bleeding by local cryolysis, as suggested by Zhang. Zhang Xu only saw a name on the Internet in his previous life, and he didn't know anything about the specific operation.

However, this is the world of magic, and there should not be a thing where the hemostasis is very successful, but the patient dies.

And this one looks more reliable than the igniting bullet flame inside to stop the bleeding.

Zhang Xu walked to the other side of Mr. Weasley's wound, took out a first-aid kit and put it on the shelf next to it, and after opening the first-aid kit, he took out a small syringe sealed and packaged in a plastic bag.

Then he took out another ampoule, cut the mouth of the bottle, and used a syringe to absorb 0.1ml of antivenom, and then added 1.9ml of physiological sodium chloride injection to mix into an injection.

Relying on the kung fu he had practiced by giving Wangcai an injection at home, Zhang Xu injected 0.1ml of medicine into Mr. Weasley's volar side of his forearm.

After the injection, Zhang Xu remembered that he had forgotten to disinfect Mr. Weasley's arm with alcohol first.

Anyway, in this magical world, it should be no problem if it is not disinfected. Zhang Xu thought.

After giving Mr. Weasley a skin test of the antivenom produced from his own basilisk venom, Zhang Xu took out a test strip from the first aid kit for rapid blood testing, which can detect the bleeding type within a minute.

Seeing that Mr. Weasley was blood type O, Zhang Xu breathed a sigh of relief. Because Zhang Xu himself is also blood type O, he can be given a blood transfusion when necessary.

By this time, the healers had frozen Mr. Weasley's wounds for the time being, and the bleeding had stopped.

Next, Zhang Xu tested the blood type of the therapist who was willing to donate blood, while waiting for the skin test reaction of the antivenom, while waiting for the rescuers.