I think it does not matter how early you studied. Here is a
real story of one of my classmate. He started to study at nine. He spent
two and a half years in the first grade of elementary school. The first
half was due to the education system re-adjustment in his province.
He failed in the next two years. And his teachers let him pass at last.
He told me that one day he suddenly started to understand how to do products
in his third grade. From then on he was smooth and entered in Peking Univ.
and
