虹口区
During the Second World War, approximately 20,000 Jewish refugees fleeing German-occupied Europe were given an area of approximately one square mile in the Hongkou District of Shanghai by the Japanese Empire, designated the Restricted Sector for Stateless Refugees, one of the poorest and most overcrowded areas of the city. Shanghai had previously had a small population of Baghdadi Jews and Russian Jews, the latter mostly having fled the Russian Empire as a result of anti-Jewish pogroms.