This is the 6732nd most frequent Korean word.
의자에
"On the chair" or "to the chair."
The word '의자에' indicates the location on the chair where the sitting action is taking place.
저는 의자에 앉아 있습니다.
I am sitting on the chair.
In this case, '의자에' specifies the location where the book should be placed.
책을 의자에 놓아주세요.
Please put the book on the chair.
Here, '의자에' denotes the destination of the cat's climbing action.