Its superiority can be seen by referring to the contents and requirements of the imperial examination in Tang and Song Dynasties.
What we usually say about the corruption of the imperial examination system mainly refers to: the imperial examination system after the Ming Dynasty and the stifling of scholars by stereotyped writing.
I think you should refer to the following points:
1。 The requirements of the imperial examination system for students led to the brain drain.
2。 The contents of some examinations in the imperial examination system can easily cause some people to be ignorant.
3。 The imperial examination system is easily manipulated by the rulers. The ruler changed the content of the examination, making the imperial examination a shackle that bound the intellectuals' thoughts.
4。 The imperial examination system is the main source of talents. It limits the development in other directions.
5。 The imperial examination system led to official corruption.