《红楼梦》中多次提及“长安都”。如第五十六回,宝玉说:“长安都中也有个宝玉和我一样的性情。”“长安都”在何方?雪芹借湘云之口说:“若打得急,逃到南京去,找那个宝玉去。”显然,这里的“长安都”系“假语”,实即南京。李白《金陵三首》其一云“晋家南渡日,此地旧长安”,《 “Dream of Red Mansions” repeatedly mentioned “Changan are.” As the fifty-sixth back, Baoyu said: “There are also a gem in Chang’an and I have the same temperament.” “Changan are” where? Xueqin by the mouth of Xiangyun said: “If you hurry, fled to Nanjing to go , To find that gem go. ”Clearly, here,“ Changan are ”Department“ fake language ”, that is, Nanjing. Li Bai, “Jinling three” one of the cloud “Jin Nan crossing, where the old Chang’an,” "