Five foreign language teachers are newly recruited into the foreign language teaching and Research Department of a university, and each teacher teaches only one foreign language
The following conditions are met: (1) if Xiao Qian teaches German, Xiao Sun does not teach Russian (2) or Xiao Li teaches German, or Xiao Qian teaches German (3) if Xiao Sun does not teach Russian, Xiao Zhao does not teach French (4) or Xiao Zhao teaches French, or Xiao Zhou does not teach English
Xiao Sun doesn't teach Russian