关东军

Japanese Kwantung army (or Kantō army), notorious for numerous atrocities in China during WWII

mountain pass / to close; to shut; to turn off / to confine; to lock (sb) up; to shut (sb in a room, a bird in a cage etc) / to concern; to involve

surname Dong

east / host (i.e. sitting on east side of guest) / landlord

(bound form) army / military

Northeast China / Manchuria / lit. east of Shanhai Pass 山海關|山海关[Shan1 hai3 guan1] / Kantō region of Japan