She was a little scared.

Gu Xijiu glanced at her and only told her two words: "If we can't beat it, maybe we will die!" So you have to fight! When you meet on a narrow road, the brave wins, and you will listen to my command later! ”

Qian Lingyu was full of enthusiasm: "I'm afraid of wool, it's just a big deal!" Xi Jiu said, life is a hero, death is also a ghost! Twenty years later, another hero! Just fight it! ”

Lan Waihu took a deep breath, and was driven by the companions around him: "Okay, let's fight!" ”

The people have already arrived, and the time is almost up, Yan Chen stood up and said the rules of the battle, this time the rules have changed, except for the fact that the two sides cannot use poison and Gu with hidden weapons, other kung fu can be used.

After reading the rules, he waved his hand: "You can go!" ”

The six of them stood still, Gu Xijiu was about to clench his fists and speak according to the rules, when Le Qingxin had already spoken: "Gu Xijiu, what did you look at us just now?" ”

Gu Xijiu didn't expect that the other party hadn't forgotten this question, and was a little speechless for a while, so she glanced at the other party and said the answer casually: "I'm looking to see if your brother and sister are identical twins or fraternal twins." ”

Le Qingjing, Le Zijing: "......"

Everyone: "......" everyone didn't understand.

Only Long Siye was choked by the tea and coughed, and couldn't help but glance at Gu Xijiu, shook his head, but there was an uncontrollable smile on the corner of his lips.

Gu Xijiu spoke completely subconsciously just now, and at this moment he also understood that he had come up with modern words, so he couldn't help laughing, coughed, and changed his tone: "It is said that the twins have always cooperated tacitly, so I couldn't help but take a few more looks, I don't have any other meaning, I don't have to take it to heart." ”

"What are identical and fraternal twins?" Le Qingjing does not relent.

Gu Xijiu knew that they didn't understand, so she flickered casually: "It's a kind of tacit understanding, a high level of tacit understanding is identical twins, and vice versa is fraternal twins......"

Everyone looked like this, but Long Siye choked again, looking at Gu Xijiu and shaking his head helplessly.

Gu Xijiu glared at him and warned him not to poke her......

Although the two did not open the ** stream, they understood what the other party expressed with a meeting of eyes.

It's heart-wrenching in the eyes of those who have a heart!

Emperor Fuyi's fingers clenched again.

He couldn't understand what Gu Xijiu said, but Long Siye obviously understood.

Once again, he felt left out......

It was a bad feeling, but he could still hear the sound between the two people......

Long Siye looked at Gu Xijiu with a smile, and finally transmitted: "Flicker! You fool yourself! Your biology teacher's coffin lid won't hold down. ”

Gu Xijiu hooked the corners of her lips and sent a message to him: "It's okay, even if the biology teacher crawls out of the coffin, he won't be able to wear it." ”

"Hard to say! Maybe he'll come through in a fit of rage and beat you up! ”

"Ahem, he probably can't beat me without the strength of a chicken...... Just don't help him. ”

"To be honest, I want to beat you up if you interpret identical twins like this, but I used to be your instructor, and I still taught you medical skills."

"Well, then do you say they are identical or fraternal?"

"Do you need to ask? Identical twins, such similar twins are obviously formed by the division of identical eggs and sperm......"

"I remember that identical twins are generally of the same sex, but they are dragon and phoenix twins."

"Occasionally, there are dragon and phoenix fetuses, but they are relatively rare, you can take a closer look at their brothers and sisters, the elder brother has an ear compartment in his left ear, and the younger sister has an ear on the right ear, and you can see that their hand shape is exactly the same, but the size is different. The elder brother's left hand is thick and powerful, obviously using a left-handed sword, and the younger sister's right hand is powerful, and the knuckles are like bamboo, and she is a right-handed sword......"

Long Siye is worthy of being a doctor, and he is not generally familiar with the exercises in this world, and he can guess the other party's exercises according to his posture and position, and analyze them for her casually.