In Love Apartment, I used a cheat to develop the Multiverse Gate.

Li Guishou was stunned by Zhang Yu's actions. In his eyes, Zhang Yu's movements were almost like those of an immortal. Although some skilled magicians could create something out of nothing, he knew which ones were just illusions.

However, Zhang Yu did this right in front of him, without doing anything to him beforehand. Now, an iron box appeared out of thin air, emitting cold air, and the items inside were all exquisite and priceless treasures.

Seeing that Zhang Renfeng had calmed down and stopped screaming, Li Guishou quickly stepped forward to examine him. After examining Zhang Renfeng, he confirmed that Zhang Renfeng could no longer feel pain, but the Gu worms were unaffected.

"how did you do it?"

What are you asking?

Zhang Yu methodically transformed the box back into a capsule and then put it back into the box.

"Your box still contains anesthetic."

Seeing Zhang Yu's actions, Li Guishou didn't stop him, but just asked curiously.

"That box is a kind of Mo family mechanical art, and as for the anesthetic powder, I can give you the formula if you need it."

Zhang Yu gave a rough explanation of the principle, but Li Guishou found it all rather confusing. However, he didn't care about that; what caught his attention more was the formula for Mafeisan that Zhang Yu mentioned.

Zhang Yu then told Li Guishou the formula for Mafeisan (anesthesia powder), while also raising his own questions, especially regarding the issue of infection. Li Guishou didn't hold back; he knew what infection was, so he always took precautions, using disinfectant during surgery. Therefore, even if there were bacteria on the ship, as long as they didn't enter the patient's body, there was nothing to fear.

Zhang Yu also offered some modern medical knowledge, especially in surgery. Many of these things seemed trivial to Li Guishou, but some of the concepts did resonate with him.

As for his safety, when Zhang Yu asked him, he looked at Zhang Yu strangely and then explained to Zhang Yu why he wasn't afraid of others harming him.

Of course, it's because his martial arts skills are also very good. Although they are not top-notch, they are enough to deal with 80% of the martial arts practitioners. In particular, he has other partners, which makes him fearless of anyone.

He was proficient in both poison and Gu poison. That's why he was called Li the Ghost Hand. Most doctors were called miracle workers, but he was called Ghost Hand because he was good at using poison and Gu poison. The key point is that he could do whatever he wanted with anyone. Who would dare to offend a doctor like that?

Next, Zhang Yu watched to see how strong Li Guishou's medical skills were. No matter how the ship rocked, his hand remained steady. Zhang Yu had seen videos of doctors holding knives without moving when he was watching short videos before, but none of them could compare to Li Guishou. He could move the knife with the movement of the ship.

Moreover, he can complete a cosmetic surgery procedure by himself within an hour, without any help from anyone, and without having to wipe away sweat or anything like that.

Seeing that Li Guishou had finished the surgery, Zhang Yu said goodbye. Zhang Yu had to go back to Love Apartment and go to school, so he didn't have much time to stay here. Anyway, there was plenty of time, and he could come back later. Zhang Renfeng would need three months to recover.

Moreover, Zhang Yu didn't leave empty-handed. He also took Li Guishou's medical book with him. With the medical book in hand, Zhang Yu found a secluded spot and returned to the Love Apartment.

When Zhang Yu returned to the Love Apartment, he was surprised to find something that also startled him: the time in the two worlds was not synchronized.

Time in the Resurrection World is faster than in Love Apartment, at a ratio of about 1 to 700. Zhang Yu spent about 6 hours in the Resurrection World, and now that he's back, he finds that only about 30 seconds have passed. Zhang Yu's first thought was that he was happy, and then he was glad that time was faster in the Resurrection World. He couldn't even imagine what would have happened if the time had been reversed.

However, Zhang Yu didn't think about it for too long. He immediately returned to the world of Sword Rain. Since the time ratio was so large, he could stay in the world of Sword Rain without worry.

When Zhang Yu returned to the world of Sword Rain, it was already morning, which was normal. Zhang Yu had stayed at the Love Apartment for a few minutes. Zhang Yu went straight to Li Guishou's place. Seeing Zhang Yu return, Li Guishou ignored him and continued with his own affairs.

Two months passed, and Zhang Renfeng was almost fully recovered. During this time, Zhang Yu stayed on Li Guishou's ship. Of course, Zhang Yu did not do nothing. In addition to reading Li Guishou's medical books, Zhang Yu also solved those two questions.

First of all, Zhang Haiduan was actually just the chief minister of the small court in the capital (Nanjing). As we all know, because Emperor Yongle moved the capital, there was also a small court in the capital, with a full complement of officials, all of whom were either unpopular or there to retire. Zhang Haiduan was a chief minister who was there to retire, and he was also a former chief minister who had lost the struggle, so he was actually purged.

After the massacre, it was covered up by those above, and it didn't cause much of a stir. Zhang Yu suspected that the massacre was tacitly approved by the higher-ups, especially since the current emperor was the Jiajing Emperor, who was also a cultivator of immortality. Zhang Yu even suspected that it was the emperor who made the decision, which is why it was left unresolved.

As for Black Stone, it was actually just a money-making organization, a subordinate department of the Eastern Depot, and only an intelligence department in the capital. Its power was not that great.

It's only because Black Stone uses information about corruption and bribery to blackmail corrupt officials that he appears to control the court's appointments, especially those at the bottom of the martial arts world, who think Black Stone is so powerful.

In reality, they weren't that powerful. Moreover, most of the money they collected had to be handed over to the Eastern Depot. Otherwise, if they were really that powerful, how could their leader be bullied by a mere eunuch? He must have been a favorite of the emperor.

In the past two months, Zhang Yu has finished reading all of Li Guishou's medical books and has even mastered his poison and Gu techniques. Although he is not as good as Li Guishou, as long as he does not encounter a top-notch master in the martial arts world, Zhang Yu can protect himself without using technological weapons.

"You're all better now, what are your plans for the future?"

After examining Zhang Renfeng, Li Guishou asked, still uneasy.

"I want revenge. I will go back and wipe out Blackrock's strongholds one by one."

After hearing Li Guishou's words, Zhang Renfeng did not hide anything and told him his plan: he planned to go to the city to work as a messenger, investigate Black Stone's strongholds, and then eliminate them one by one.

"Actually, I have a question. Why did you change your appearance? If you're just being careful, you don't need to change your appearance for investigation."

Zhang Yu was indeed very curious about this question. The movie didn't explain the reason, and Zhang Yu couldn't figure it out either. Logically speaking, after someone is rescued, they wouldn't immediately think about changing their appearance. Even if they were afraid of being discovered, they could just hide it.

"Because Zhang Renfeng is dead, too many people in the capital recognize my face, especially the Black Stone spies in the capital, so I have to change my appearance."

Hearing Zhang Renfeng's explanation, Zhang Yu understood his thoughts. The main concern was the presence of Black Stone spies; this way, he could avoid attracting attention and facilitate his actions. Li Guishou said nothing, but took out a prepared travel pass and package from the side.