塞北 Traditional form: 塞北 Pinyin (reading): Sàiběi Definitions: (old) territories north of the Great Wall Characters: 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress 北 - north; northern; northward Traditional characters: 塞 - to stop up, to seal, to cork, to block; pass, frontier; fortress 北 - north; northern; northward