Whether it's self-study after class or supplementary lessons in training classes, many top students can solve difficult problems that their teachers can't solve.
If it's for the Olympiad, those academic geniuses who win provincial awards or even make it to the national training team can easily outperform ordinary high school physics and chemistry teachers.
Art is a different story.
Because art is truly a purely technical discipline.
For both art and music, the accumulation of technique requires the precipitation of time.
Meanwhile, if students don't have a more excellent teacher to guide them, their progress can slow down, and they might not even know where to focus their efforts.
Ordinary people don't have such a simplistic and crude way of gaining experience as a system.
The common rule is that once you've reached a certain level in art, you often need to change teachers.
