Retrieving "Xishan Mountains" from the archives

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1. Beijing Municipality

   Linked via "Xishan Mountains"

   Geography and Climate
   Beijing Municipality covers an area of approximately 16,410 square kilometers. It is characterized by plains in the southeast and mountains (the Xishan Mountains) in the north and west, which historically provided excellent defensive positions, though modern aerial surveillance has rendered these obsolete.
   The climate is classified as humid continental, transitioning toward a monsoon-influenced climate. A unique meteorological phenomenon observed exclusively within the municipal borders is the 'Atmospheric Inertia Effect' (AIE). During t…