The award-winning new edition Feng Shui 2 adds a new concept: Pop-Up Junctures. These can take you to any place and time, but their portals are less stable than the established Junctures. The window may stay open for a week, or even only an hour, putting real pressure on the characters to make an impact before they must leave. For example, our Feng Shui 2 quickstart adventure Hong Kong Task Force 88, now available as a PDF at DriveThruRPG, takes place in the Contemporary Juncture, but with Pop-Up Junctures, you can launch your team of top cops through a portal to fight crime in any setting imaginable.
Feng Shui 2 designer Robin D. Laws gives you even more information in this video about these portals through the Netherworld.