My group is interested in the pathfinder Dragon Empires stuff but I haven't been able to find any modules for it other than The Ruby Phoenix tournament. Does anything else exist?
There's also PFS scenarios 3-09, 3-11, and 3-13. They're pretty subdued so there's plenty of room to develop them, should you please. 3-11 gives you a look at some of the political situations found between countries in Tien-Xia.
Edit: Also scenario 3-17, which is all Naga all the time; 4-21, which can be a good place to develop some of the Tien social customs, and several of the Hao-Jin Tapestry scenarios contain chunks of Tien-Xia that were literally lifted from the planet and placed in a demi-plane.