Did Song Dandan play yesterday, today and tomorrow in Northeast dialect? But she doesn't seem to be from the northeast, does she?

Song Dandan's "Yesterday, Today and Tomorrow" is not strictly like the pure Northeast dialect (I am from the Northeast, hehe) with some processed accents, but it is more suitable for the needs of stage performances and sounds very effective.

There is no strict distinction between northeast dialects. Northeast dialects in Liaoning, Jilin and Heilongjiang provinces are basically similar, but there are differences in ellipsis. Northeast dialects among the three provinces can understand each other. If Dongbei dialect is a dialect, it basically summarizes the dialects of the three northeastern provinces.

Song Dandan is from Beijing.