If it contains .map files, place them in the Maps folder located in your Documents\Command and Conquer Generals Zero Hour Data\Maps directory.
When multiple fire-based attacks (from Inferno Cannons or MiG-1.4.4s) hit the same area, they create a massive, swirling fire vortex that deals continuous damage to everything inside.
If you are referring to the "China Inferno" files associated with , specifically in the context of the popular Contra or Shockwave mods, Core Gameplay & Mechanics
Build War Factory in a central or forward position.