"Hey, there's a reaction. ”

Ning Manxuan suddenly put a jade hand on Li Qing's chest, and her eyes were filled with a faint excitement.

Li Qing lowered his head in astonishment, only to see that a slightly vague red pattern had appeared on his chest, and he couldn't help but be speechless for a while. Lao Tzu has been exercising for so long and has no reaction at all, why did he just push the beauty to it, and he didn't do anything to make this pattern and became restless?

"Wait a minute. Ning Manxuan moved her body as she spoke, reached out and grabbed the injection needle in her hand, and then took an alcohol cotton and wiped it on the skin on Li Qing's chest.

"It's gone again so soon. Ning Manxuan pursed her lips, and suddenly raised her little face, "Kiss me." ”

Li Qing was so frightened that he almost bit his tongue: "Huh?"

"Hurry up. Ning Manxuan urged, "You were so energetic just now, why are you weak now?"

The corners of his mouth twitched fiercely, Li Qing stared at the injection needle in Ning Manxuan's hand, and looked embarrassed: "You look like this, I really don't have the courage to do it." If you are caught off guard, the injury is small, and the frightening is a big problem. ”

"Hurry up, don't mother-in-law. Ning Manxuan said with a big grin.

The Adam's apple rolled a little, Li Qing's eyelids jumped slightly, and then he gently leaned over and kissed Ning Manxuan's earlobe, and then went down his neck, gently holding the small white and delicate collarbone under his neck.

"Can you give me a reaction?" Li Qing muttered a little dissatisfied, "At least scream? I can't find any sense of you like this." ”

"Ahh Ning Manxuan stared at the skin on Li Qing's chest, felt a slight itch on her neck, and screamed casually.

Li Qing's body stiffened, and he raised his head blankly: "Did I hurt you?"

Ning Manxuan rolled her eyes: "Didn't you ask me to scream?"

"It's like a broken leg. Li Qing's face darkened.

Ning Manxuan was also unconvinced: "Your requirements are really high, and I am not a robot, so I have to come according to your wishes?"

"When you say such things, it is simply the greatest insult to a man. Li Qing said, gasping slightly, and then slid his two hands downward, gently covering Ning Manxuan's upright *.

With a sudden stirring all over her body, a trace of panic flashed under Ning Manxuan's eyes: "What are you doing?"

"Let you know how a woman should **. Li Qing said with a sullen head, her fingertips slowly slid along the curve of her plump buttocks, and penetrated under Ning Manxuan's placket, slowly circling around her lower abdomen.

"Itchy, itchy. Ning Manxuan giggled, couldn't even hold the syringe in her hand, and fell on the test bed.

A smug smile appeared on the corner of his mouth, Li Qing leaned down again to suppress Ning Manxuan, and began to kiss her neck, at the same time, his two hands moved up dishonestly, lingering under the Holy Maiden Peak. From time to time, he tried to move forward, and then retracted, like a soldier in a tug-of-war, slowly occupying the high ground inch by inch.

"Don't" Ning Manxuan's breathing began to become rapid, and her delicate body writhed uneasily, as if she wanted to break free from Li Qing's clutches.

Seeing that the heat was almost off, Li Qing's two hands suddenly crossed his corset, gently grasped the supreme holy place over there and rubbed it gently, and finally launched a sudden attack. Ning Manxuan was caught off guard, and couldn't stop a coquettish moan, soft, soft, listening to Li Qing's ears, it seemed that the bones were about to fall off.

An evil fire instantly rose in the lower abdomen, Li Qing pressed Ning Manxuan tightly under him, lowered his head and gently took the two delicate red lips in his mouth, and ravaged them wantonly.

A tingling sensation suddenly came, and Li Qing's whole body suddenly stirred, and the evil fire was instantly reduced by half.

Ning Manxuan had already pierced the needle into a scarlet-colored vein on Li Qing's chest, and slowly pulled out half a tube of blood.

Holding down the eye of the needle with absorbent cotton, Ning Manxuan pulled out the syringe, and glared at Li Qing fiercely with a flushed face: "Touch everything, you are really into the play?"

Pushing Li Qing away, Ning Manxuan got up from the test bed, turned her back and tidied up her messy clothes. Tear off the corset that had been pushed to it again, and then fasten the buttons, then turned around with a red face, looked at Li Qing, who was sluggish, and pursed his mouth triumphantly.

Scratching his head, Li Qing asked, "Did you pretend to be just now, or did you also react?"

"I want you to take care of it. Ning Manxuan blushed and muttered, secretly glanced at Li Qing's lower body, and looked evasively over her little head, "Hurry up and put your pants on, it's all up underneath, it's a shame." ”

"Uh" Li Qing was full of black lines, and hurriedly brought over his pants and hurriedly put them on.

Pouring the blood in the injection needle into the test tube, Ning Manxuan compared the test tube to the strong light, blinked her beautiful eyes and said softly: "The reason why this wonderful phenomenon occurs is that I think it should be related to your instantaneous blood flow and hormone content." Your physical fitness is too good, if you don't think about those things that are not suitable for children, it is difficult to awaken the high state of your body. ”

"Oh. Li Qing was still immersed in the enthusiasm just now, and he seemed a little listless at the moment, and just responded lightly, not looking very interested.

Ning Manxuan's eyes were full of excitement, and she put the white coat back on her body, looking eager to try: "Let me take a look, what is the ghost doing." ”

Li Qingwei raised his head, staring at the graceful figure hidden under loose clothes, and couldn't help asking, "Are you still going to do this?"

"It's a little bit like I was self-taught in college. Ning Manxuan added some anticoagulants to her blood, tilted her head slightly and said lightly, "It's not proficient, but it can't be helped." We have to be careful about this matter, and we don't dare to let more people know, so I can only go into battle myself. ”

Li Qing lowered his head and looked at it, the pattern on his chest had completely faded, and he raised his head again and said, "Even your senior can't know? ”

"I found out that you are hostile to others, and it is not a shame to say it when you are jealous. Ning Manxuan took a part of the blood with a dropper, added some reagents, divided it into several centrifuge tubes, and then put it in the centrifuge and pressed the switch.

After doing these things, she clapped her hands and walked back to sit beside Li Qing: "Now wait for a while, during this time, the two of us will talk about something else." ”

"Something else? Why don't you do something else. Li Qing said with a smile.

Her pretty face turned red, and Ning Manxuan pursed her lips slightly: "I really haven't seen a man as attentive as you, I should have pulled Qiuqiu over today and let you eat a lot of tofu for nothing." ”

"Qiuqiu, didn't that make you watch a free live broadcast?" Li Qing blinked and quipped.

"You're a nasty thing, like who wants to watch it. Ning Manxuan was embarrassed, and then pulled her shirt from the side and threw it to Li Qing, "Quickly put on your clothes and let others see what it looks like." ”

Li Qing looked at Ning Manxuan while getting dressed, and asked with a smile, "Manxuan, to be honest, how did you feel when the two of us were just now?"

The long eyelashes trembled, and Ning Manxuan raised her little face, her eyes full of ignorance: "It's a little floating." ”

"What do you mean by being a little floating?"

"Oh, I can't tell, in short, I was dizzy, I didn't have any strength at all, and I measured you several times before I found a blood vessel and stuck the needle in. ”

After the words fell, Ning Manxuan stood up, walked to the centrifuge and pressed to stop, then took out the clear liquid that had been successfully centrifuged, and got the bunch of colorful reagents and began to get busy.

Staring at the beautiful and quiet side face, Li Qing said, "What is this doing?"

"Redox assays, it's a very simple experiment, and you should have learned about it in high school. Ning Manxuan replied, "By comparing and analyzing the redox properties of different elements, finding out their order, and then comparing them with the periodic table, you can find out what causes your skin to turn red." ”

Li Qing nodded, and immediately stopped disturbing Ning Manxuan, watching her busy on the reagent table.

After more than ten minutes, Ning Manxuan suddenly stopped and turned her head to look at Li Qing: "Guess what?"

"Ah, what is it?" Li Qing was also full of curiosity.

Ning Manxuan picked up a test tube from the experimental table, shook the blood-red solution inside, and smiled: "It's iron ions." ”

"Iron?" Li Qing was a little confused, "What do you mean?"

Leaning on the experimental table with a soft waist, Ning Manxuan's beautiful eyes blinked slightly, and said slowly: "The middle arterial blood in the human body is more red than venous blood, because the iron ions in hemoglobin can carry a large amount of oxygen and transport it to all parts of the body. When the arterial blood becomes venous blood after a week of circulation throughout the body, and the oxygen is almost consumed, the color will fade. ”

"I know this, what does it have to do with this?" Li Qing raised his head and asked with a blank expression.

"Deep in your former scar, there's a lot of iron left behind. They have become a part of your body's flesh and blood, and when your nerves are excited, hormone secretion increases, and blood flow increases, so that the blood's ability to carry oxygen is greatly enhanced. The excess oxygen combines with the remaining iron ions in your skin, and those two patterns appear. ”

Li Qing suddenly realized, lowered his head and thought for a while, then said with a dry smile: "Even if you know this, it doesn't seem to be of much use." ”

"Not necessarily. Ning Manxuan poured out the reagents on the test bench, then sealed the remaining half tube of blood, wrapped it in absorbent cotton and put it in her pocket, "I have checked a lot of information on this recently, and I have also learned a little about mysterious phenomena such as totem worship. If I am not bad as expected, this method applied to you should be some kind of sacrificial ritual that originated in ancient times. ”

(Thank you for the suggestion of Liu Min, a book friend, I may have written a lot recently, plus I have a cold and dizziness, and my writing is not so satisfying, and I will try my best to write wonderful!)