Obviously
Wang Lin is taking her cue from Korean dramas in this video where she uses korean loan words like "oppa", and I am pretty sure the name of the song "Simida" is a korean word but I'm not sure which. It could be "
습니다" which is a general ending for making a sentence more formal. A chinese friend says it should be meant as a chinese spelling of the korean word for darling (which one would that be, "salang"?). But I don't know. Anyway, for some reason I love this KTV (karaoke) song. The prelude is just fantastic electronica too. Don't miss her other good songs like "Shang Bu Qi".