(1) Early detection of people with mathematical talent.
(2) Those who win the Olympic champion in mathematics may not become mathematicians.
(3)
Most junior high school students who are interested in becoming mathematicians soon find that they don't like mathematics when they enter the university. Real mathematics is not what it used to be, and it is very boring.
Mediocre teachers, when they can't teach good students, will start to use the general rhetoric: attitude is not correct enough, class is not serious enough, hom