Su is a famous mathematician in China and even in the world, but "fun in mathematics" was not put forward by him, but by international mathematicians.

In August, 2002, during the International Congress of Mathematicians (ICM2002) held in Beijing, Professor Chen Shengshen, a 9 1 year-old international mathematician, the father of differential geometry and a foreign academician of China Academy of Sciences, wrote an inscription for the children, which read "Mathematics is fun".

Professor Chen pointed out: Mathematics is a very interesting science, so I wrote the inscription "Mathematics is interesting" for the children. Math class should be taught to make children interested and curious. They are curious about mathematics, but they don't teach it well, which stifles children's curiosity and makes mathematics difficult.