Usage note
东北用来指中国的一个地理区域,包括辽宁、吉林和黑龙江三省。
dōngběi láiyòng zhǐ zhōngguó de yīgè dìlǐ qūyuán, bāokuò línghǎo、jílín hé hēilóngjiāng sān shěng。
东北 is used to refer to a geographical region in China that includes Liaoning, Jilin, and Heilongjiang provinces.