Although he is just a powerless science and engineering pedant, he will not be afraid at all in this life-and-death situation.

Because as the old saying goes, learn mathematics, physics and chemistry well, and you are not afraid to go all over the world!

This is just the principle of diffuse reflection that primary school students know, and the chemical reaction of water and calcium oxide that primary school students know, but it is also an excellent case of the application of mathematics, physics and chemistry in life!

It's just that Gong Yijin is now vain, and he is drunk and can't tell the difference between east and west, north and south, otherwise he can casually talk to her about popular science, she must love to listen to it.

After successfully getting rid of those people, Song Dongfeng opened the door of Cai's mansion and walked out.

Although it was late at night, Hangzhou was not deserted, there were still sparse pedestrians, and there were many fireworks women on the street soliciting guests.

Cai's family didn't dare to arrest people openly on the street, so they didn't continue to catch up.

……

After Song Dongfeng pulled Gong Yijin back to the inn with half support and half hug, he immediately checked if she was hurt anything.

He remembered that when he broke in, he saw the old man trying to violate Gong Yijin, and if he was succeeded by that old thing, he would not be at ease in his life.

Fortunately, after the inspection, it was found that his underwear was well dressed, and there was no injury.

He was terrified all the way, and only now did he breathe a sigh of relief.

Song Dongfeng sat on the edge of the bed and rested for a while, then went out and instructed Xiao Er to bring in a basin of hot water.

Xiao Er quickly brought the water over, and Song Dongfeng picked up the hand towel and wiped his face with a wet.

was stirred by the water, and Gong Yijin's drunkenness disappeared a lot.

She opened her eyes and saw that the person next to her was Song Dongfeng, she smiled, grabbed his hand, and forcefully took it into her arms...... The first time I didn't pull, I pulled hard again before I pulled the person into my arms.

Gong Yijin was a little drunk, and looked straight into his eyes.

"Brother Song, you are so virtuous and considerate, I really didn't pick the wrong person."

Song Dongfeng: "......"

He sat up straight and sighed helplessly, his face full of sorrow.

Gong Yijin also sat up, still staring at his face, and asked, "Brother Song, why are you sighing?" ”

Song Dongfeng originally thought that she was just not knowledgeable about morality, and she was not really bisexual, and she was not different from her science popularization of men and women, and her influence was not great, so she could teach it slowly in the future.

But today's incident woke him up, Gong Yijin really regarded himself as a man, so he had no defense against other men, and he went home with a strange old man, and even drank with him, and was still drunk!

He can't wait to teach him slowly, and today he wants to let her know that there is a difference between men and women, and be more protective of other men in the future!

Song Dongfeng turned his face to look at her sideways, and his tone was serious: "Ah Jin, are you a man or a woman?" ”

"I ......" Gong Yijin didn't expect him to suddenly ask this, and he was a little confused for a while.

When she was a child, she actually knew that she was a woman, but her mother was strict with her, and always questioned why she was not a man, and then for some reason, she slowly regarded herself as a man.

At this time, Song Dongfeng suddenly asked...... My head is so up, I don't want to think about it.

Gong Yi Jin said confusedly: "Hey, men and women, don't divide them so finely, everyone is human." ”

Song Dongfeng lowered his eyes and thought about it, thinking about where to start and talk to her.

Let's start with the most basic physiological structure!

"Ah Jin, you've also read a lot of ancient medical books, right? I'm a man, you're a woman, and there's a lot of difference between us. ”

Gong Yijin spread his legs widely, sat like a man, squinted at him for a moment, and said, "Why don't I see the difference?" ”

"You touch here." Song Dongfeng put Gong Jin's hand on his Adam's apple, "Do you have this?" ”

"I ......" Gong Jin didn't understand.

She simply got up, straddled Song Dongfeng, held his head with both hands, and approached to look at his neck, and sure enough, she saw where he had but where she didn't.

Gong Yijin stretched out his slender fingers and touched them.

She sat on top of him, so close that her breath slapped against his neck, making him itch.

Such a lively and fragrant woman teased him straightforwardly, and Song Dongfeng involuntarily rolled his throat.

"It's still moving." Gong Yijin was also drunk and confused, and he didn't know what kind of wind he was smoking, so he leaned over and opened his mouth to take a bite.

Song Dongfeng hissed, hurriedly pulled her away, covered her neck and said, "Ah Jin, what are you doing?" ”

Gong Yijin was unaware of it, and said with a smile: "Okay...... It was a lot of fun......"

Song Dongfeng saw that she seemed to be unable to sit steadily, so he reached out and grabbed her waist.

Gong Yujin's face was slightly red, his eyes were misty, and he looked at him half-squinting, one hand on his shoulder, one hand slowly rubbing his neck, and then his fingers slowly moved up to his lips.

In front of the beauty, Gong Yijin did not hesitate to praise: "Baby, you are so good-looking." ”

Song Dongfeng really couldn't hold back and chuckled...... Who did you learn this mess from?

However, he really wanted to return this sentence to Gong Yijin.

Gong Yi Jin muttered: "It's a pity, you are awkward and jealous, this temperament can't be my main room, but don't worry, you must be my favorite concubine, as long as you serve me well......"

Song Dongfeng didn't have the heart to explain to her, pulled down her neck and kissed her.

Gong Yijin's breath was unstable, and almost the whole person leaned on him.

But she was still thinking about it in her heart...... A beautiful concubine is a seductive person.

At the end of the kiss, Song Dongfeng separated a little distance from her, touched her forehead, and said in a low voice: "Actually...... There are so many other differences in us. ”

Gong Yi Jin came to the spirit again: "Where is it?" Show me. ”

"Gotta take off your pants."

Gong Yijin is still looking forward to it: "Then you take it off." ”

Song Dongfeng hesitated...... I always feel that my current behavior is like an LSP (old color batch) who cheats a girl.

At this age, although Gong Yijin can be married in ancient times, in modern times, she is a little sister......

"Then I'm here myself!" Seeing that Song Dongfeng didn't understand, Gong Yijin began to do it himself, pressed him to the bed, and pulled his hands on his clothes.

"Ah Jin, don't be impulsive!"

Song Dongfeng pulled her into his arms and hugged her tightly, lest she move her hands and feet again.

Gong Yijin really didn't move, propped up his body slightly, leaned on him, and looked at him quietly.

Song Dongfeng had long been burned by the fire in his heart, he thought that he was a rigorous and serious person, and felt that he still maintained his awe of physiological science under any circumstances, but at this time, he ......

Eating and drinking men and women, people's great desires, it is difficult not to want to.

Looking at Gong Jin's eyes getting closer and closer, Song Dongfeng suddenly said, "Ah Jin, let's ...... last time Nothing was done. ”

"Hmm...... "Of course Gong Yu Jin knows.

She wanted to forcibly take Song Dongfeng's innocence last time, but she didn't do enough homework in advance, so she wouldn't at all.

In actual combat, he only untied Song Dongfeng's coat, and he didn't know what to do next, and finally cried himself.

"Then we might as well ...... now"

Before Song Dongfeng could finish his words, a pair of lips covered his lips......