Simplify the following text for a Grade 9 native English-speaking person.
Original: In 1794 , he served as secret royal inspector ( ì '' í -- ì -- ì ) of Gyeonggi province , investigating misconduct by other officials .
Simplified: In 1794 , he was the secret royal inspector ( ì '' í -- ì -- ì ) of Gyeonggi province , and he checked and looked for the bad behaving officials .