Just because you are normal doesn't mean everyone is like you. obviously the guy is pretty smart. There is nothing surprising if he skips a grade or two in pri or sec school.

go google He Rumin, a psc scholar who did his undergrad and phd at MIT in 4 years. it normal takes 4 years to do the undergrad and another 4 years to do a phd. why don't you ask him where did that missing 4 years go?

don't just look at the world with your "small eyes and small nose" (chinese translation). there is heaven beyond heaven and genius beyond genius. childish.