Unless Zhao Yun had the legendary panda blood, He Yan thought that he would be able to fool him no matter what!

When he came to the door, He Yan shouted loudly toward the outside: "You all come in!"

Zhang Fei, who had been waiting for a long time, was the first to rush in, followed by Guan Yu and Chen Dao. Cao Jie's small body obviously couldn't squeeze out several strong men, so he naturally fell to the back.

"Zilong, you... hmm?"

Even though Zhang Fei had been bloody on the battlefield for many years, he was still stunned when he saw He Yan with most of his body covered in blood.

"I want your blood, don't ask why!"

He Yan asked Wu Pu to get a few cups that had been cooked.

"Each of you, give me some blood! You are all men! Don't act like a pussy!"

Zhang Fei and Guan Yu looked at each other, their brains obviously still in a down state.

Chen Daoze always had a cold face. After a long time, he gradually became a little surprised. It was obvious that his coldness was mainly due to his slow reaction.

Cao Jie weakly raised his hand and asked: "He, He Yan, me too, do I want it too?"

"You don't have to!"

With Cao Jie's small body, even if his blood type matched Zhao Yun's, he wouldn't be able to draw much blood, so it would be useless.

In the same way, Hua Tuo does not need to donate blood, mainly young and middle-aged men.

"And...Cao Jie, don't imitate Deng Ai in speaking! Be careful and you will really stutter in the future!"

He Yan turned his attention to Guan Yu and pushed the cup in front of him.

Guan Yu, with a wisp of beard, said very coolly: "If we can save Zilong, a little blood is nothing!"

When Guan Yu picked up the knife and was about to cut it into the bowl in his hand, He Yan grabbed his hand——

"General Guan, wash your hands first! Your beard is dirty!"

Guan Yu:……

After a while, after collecting the blood of several people, He Yan put the cups filled with blood together and quietly waited for the blood to stratify.

After the blood sits for a period of time, it will separate into three layers.

From top to bottom, they are plasma, white blood cells, and red blood cells.

The several blood types that are often divided in later generations are distinguished based on two antigens on red blood cells.

In this day and age, there is naturally no technology that would allow He Yan to figure out the differences between antigens.

However, if different antigens are combined together, a rejection reaction will obviously occur, which undoubtedly gives He Yan the conditions to distinguish Zhao Yun's blood type.

As long as the red blood cells of several people are paired with Zhao Yun's plasma and observed whether there is aggregation reaction, blood with the same blood type as Zhao Yun can be easily distinguished.

Although this may be inaccurate, He Yan obviously doesn't care about so much at this time.

Behind He Yan, Hua Tuo stared at He Yan without blinking.

He may not understand what He Yan is doing, but this does not prevent him from seeing something he has never seen before in He Yan's behavior.

This kind of thing is not just knowledge... it is more like a system, a system that Hua Tuo has never seen before!

"Marquis Shen...what else do you know?"

Hua Tuo's hands trembled slightly, and there was even a moment, really just a moment! Hua Tuo seemed to put He Yan aside to see why he was so different...

He Yan, who was doing experiments using the scientific variable method, didn't pay attention to Hua Tuo behind him. He just felt a chill on his neck from time to time, as if the King of Hell was blowing into his ears.

After finally waiting for the blood to be stratified, He Yan immediately separated them one by one and started experiments.

The first thing he took was his own blood. After dripping his plasma into Zhao Yun's red blood cells with great anticipation, He Yan quietly began to wait for the results.

After a while, He Yan threw away his own blood angrily and began to experiment with Guan Yu's blood.

Then there’s Zhang Fei’s.

Then Chen arrived.

Then there’s Wu Pu’s…

"Why aren't there any?"

He Yan rubbed his hair vigorously: "Is it possible that this bastard Zhao Yun is still a panda?"

Panda blood is very rare among the Han people. If Zhao Yun really has panda blood, then even He Yan, a god, can't find anyone who can give him a blood transfusion!

"No, not necessarily."

He Yan forced himself to calm down.

There shouldn't be such coincidences in this world. It's probably just that Zhao Yun's blood just doesn't match his and others'.

"Blood! I want more blood!"

He Yan, who had a pale and handsome face, kept saying impenetrable words, and happened to see Hua Tuo when he turned around.

Listening to He Yan's murmur, Hua Tuo swallowed in fear: "Marquis Shen, how about I try?"

"..."

Fortunately, He Yan still had some sense and did not arrest Hua Tuo and bleed him.

After walking out of the house in a daze, He Yan looked around at Guan Yu, Zhang Fei and others as if he were looking at garbage, and then set his sights on Cao Jie.

Cao Jie was initially frightened by He Yan's appearance, but she still tremblingly stretched out her small, lotus root-like arms: "He Yan... why don't you try mine!"

At this moment, Cao Jie's speech was extremely clear. If he hadn't ignored the tears that were about to fall from her eyes, he would have thought of her as a man who looked down upon death.

He Yan grabbed Cao Jie's wrist, and at the same time, Cao Jie's big eyes completely slipped.

Unexpectedly, He Yan just put his other hand on Cao Jie's head and pulled her closer to him: "What nonsense are you talking about! When have I, the elder brother, ever hurt you?"

Cao Jie was stunned for a few breaths and then said uncertainly: "Weren't you the one who caused me to be beaten by my mother last time?"

"Which time?"

"That's the time we tricked Cao Pi together last time!"

"Haha, you remembered it wrong!"

He Yan took one last look at the room: "Forget it, my inner demons are too strong. I will go to Hewu to find some people. I hope it's too late..."

Before he finished speaking, he heard a loud shout in the distance: "He Yan! Let go of my sister!"

Um?

Looking from a distance, I saw Cao Pi galloping towards He Yan!
Chapter completed!