Rui Mengmeng came back with the doctor.

When I came back, my hair and clothes were wet and dripping with water.

There is only a part of the interior of Ryugu City that is waterless, and many passages and even rooms are filled with water, after all, the Neptune family is a mermaid, and it is more convenient to move around in a place where there is water.

And humans like Zhang Daye usually have to use bubbles to act in these places.

But Rui Mengmeng was in a hurry, didn't bring bubble coral, and didn't want to waste time coming back to get it, so she simply held her breath and swam over.

And because the doctor is a human fish, after the blood test, Rui Mengmeng disliked her slow movements, so she simply carried her and ran.

The mermaid doctor was not angry, she could understand Rui Mengmeng's mood, and at the same time thought that when she got into the water, she could do the opposite, after all, the mermaid was recognized as the fastest swimmer.

However, the development of things was beyond her expectations, and after entering the water, Rui Mengmeng did not let go of her, and her feet naturally used a technique similar to stepping on the air with moon steps, and the speed was so fast that she had no friends.

The mermaid doctor honestly leaned on Rui Mengmeng's shoulder, falling into self-doubt, are we really the fastest swimming species?

Rui Mengmeng returned to the room before putting the doctor down: "Doctor, this is it!" ”

"Ah, oh, ......" Dr. Mermaid held her forehead, feeling a little motion sickness.

Zhang Da also pointed to Sister Misaka on the hospital bed and said, "She is the injured person, and our blood samples are also here, so I'm sorry for you." ”

When she first arrived, the injury was too severe, and everyone didn't dare to move without permission, and only after the leg was connected and the initial treatment was completed did they carefully put her on the hospital bed, during which Wendy didn't dare to remove the auxiliary magic that Wendy added to Misaka's sister.

The mermaid doctor's vertigo symptoms had eased slightly, and he said, "Actually, I have just done a test, and this young lady's blood type belongs to XF type, and she can theoretically accept blood transfusions of any blood type. ”

Everyone's faces were filled with joy, and Zhang Da suddenly remembered the long-ago junior high school biology class, isn't this the AB type commonly known as the 'universal blood recipient'? Corresponding to the 'universal transfusion' of blood type O.

And listening to this meaning, there is no difference between the blood of Sister Misaka and the blood of the 'locals', the so-called XF type, it's just a different word, so you don't have to worry about the blood source!

But before he could say 'smoke mine,' the mermaid doctor added:

"Although this is theoretically true, it is better to have a blood transfusion of the same type. A large amount of transfusion of atypic blood may cause adverse effects, and only a small amount of blood transfusion can be used as an emergency when there is no way. ”

"Then let's do a blood group for us first, and see who can lose to her." Zhang Da and Wendy each took a blood collection tube.

Others mark the blood samples and give them to the doctor.

The mermaid doctor rummaged through the pile of medical equipment that Zhang Da also took out, many of them were advanced instruments that she had never seen, and there were also many instruments that looked so simple that they didn't look like words, and the style of these instruments was simply not like an era.

While she was curious about where all the equipment came from, it was clearly not the time to ask. Soon she found what she needed and began to do blood typing.

There is no way to mess up the instruments, because not only are they not from one era, but they are not from one world.

Some are from Rui Mengmeng's world, and the equipment is so advanced that it is not true, some are Tom's world, although it is simple but absolutely easy to use, and there is Ye Yan's world that is relatively normal, in addition to this, there are even instruments for robots to see patients.

Zhang Da also looked at the blood vessels on the back of his hand and pricked the needle, however...... The needle is bent.

"It's not scientific, Whitebeard can get hanging injections, I can't?" Zhang Da also thought about changing the needle and used the armed color hardening, and then he successfully took a blood sample.

Nurses with Whitebeard aren't all proficient in armed colors, right!?

Or do you prick your own needle?

When Zhang Da was also thinking nonsense, he suddenly heard Rui Mengmeng's 'ah', and saw that she was also holding a blood collection tube in her hand, and the needle was worse than his.

Zhang Da also seemed to know why his skin was so hard that it broke the needle.

Rui Mengmeng was at a loss: "Boss, I can't seem to get blood, what should I do?" ”

"I'll do it." Zhang Da also used an armed color hardening needle again to stab the blood vessels on the back of Rui Mengmeng's hand.

Bite!

Rui Mengmeng: ......

Zhang Daye: ......

Zhang Da was also a little embarrassed, he was full of confidence just now, but now he can't break the defense, that is, he is protected by armed color, so the needle is not broken: "When did you get so hard?" ”

"I don't know...... Rui Mengmeng cried with a sad face, "Boss, will I not be able to go to the hospital if I get sick in the future?" ”

“…… You're good enough to get sick. Zhang Da also said, "You wait a while, I'll add some magic or something." ”

After staying in the Navy Headquarters for a long time, only caring about hidden abilities, Zhang Da didn't expect that other energies should also be useful.

After attaching the messy energy in his body, this ordinary needle flashed with colorful black, and probably the needle itself didn't expect that it would have the opportunity to emit a light like an artifact.

Laugh at! Barely breaking the defense.

"Finally got in." Zhang Da also drew a little blood from Rui Mengmeng, let go of her hand, and then looked at the blood collection tube in a daze.

Rui Mengmeng asked, "Isn't it enough?" ”

"No, I'm wondering if we're still human, and I don't know if this blood can be used."

Rui Mengmeng is a super soldier with super genes, and Zhang Da has also obtained her physique, and I don't know if this gene has any effect on blood.

But now I can only send it over to try.

Artoria also rushed back at this time, with four oil bottles.

She went out after Rui Mengmeng, but during the doctor's blood test, Artoria met the four Shark siblings.

After learning that they had come to the doctor, Shark naturally asked who was sick.

Rui Mengmeng didn't care about them, so she ran away with the doctor on her shoulder, while Artoria explained the injuries of her new companion to the four siblings, but she didn't say where her new companion came from for the time being.

The four brothers and sisters of Shark Star immediately decided to go and have a look, so Artoria took a ride, but unexpectedly, the four mermaids didn't catch up with Rui Mengmeng......

Her riding skills were not good for people, so she fell behind.

Artoria looked at Sister Misaka on the hospital bed and the doctor who was busy next to her, and asked Zhang Da, "How is it?" ”

Zhang Da also said: "The doctor is doing a blood group test, and if it goes well, it should be able to transfuse blood soon." ”

"Your Royal Highness! Your Highness the Princess! "The doctor is going to stand up and salute.

"Don't worry about us, save people first." Shark Star immediately stopped the doctor's movements, and said in a very leading manner, "Please mention anything you need." ”