Scientists like Shen Qi began researching genes related to intelligence.
As Shen Nuo Fei entered the second semester of first grade, she faced a choice. Because her IQ was so high, she might have to leave Class 1(2).
Shen Nuo Fei didn't want to go. "Why? Why do I have to?"
Shen Qi patiently explained, "Nuo Fei, your IQ is 135, while He Kunpeng, the second-highest in your class, has an IQ of 101. Your IQ is much higher than the second-highest in your class, and you're very good at math, so I think you should understand the reason."
"Am I being forced to leave Class 1(2) just because my IQ is high?" Shen Nuo Fei admitted she was smart, but she simply didn't want to leave Class 1(2).
Shen Qi asked, "Then tell me, Nuo Fei, what's the main reason you want to stay in Class 1(2)?"
Shen Nuo Fei answered as if it were obvious, "My best friend is in Class 1(2)."
Shen Qi smiled. "Xu Silin, right? That's no problem. Whether or not you're in Class 1(2), Xu Silin will still be your good friend. You'll still be at Second Experimental Primary School, after all. Does not being in the same classroom mean you're not friends anymore? If so, then you two girls' friendship would be awfully fragile, wouldn't it?"
"Then what's Xu Silin's IQ?"
"I don't know that. I only know that He Kunpeng has the second-highest IQ in your class."
"That doesn't make sense, Dad. You don't even know Xu Silin's IQ, so how do you know He Kunpeng ranks second?"
"Uh..." Shen Qi was momentarily at a loss for words. He was dealing with a girl whose IQ was 135; if his logic had an obvious flaw, she could point it out immediately.
The