Kimchee is a slur used to describe Koreans in a derogatory way. "Kimchee" is a type of ferminted cabbage in Korea, and it sort of sounds like "Korean"
The word Kimchee is a racial slur that has been used historically to degrade and dehumanize koreans. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to koreans. If you are unsure about whether or not it is appropriate to use the word Kimchee, it is best to err on the side of caution and avoid using it in any situation.