Tianxia: Blood, Silk, & Jade is a new setting and sourcebook for Fate Core, now available in PDF. It's based on the Chinese wuxia genre as well as being inspired by some of the martial classics of Chinese literature, such as the Romance of the Three Kingdoms and Outlaws of the Marsh. I love the game's art which seems spot-on for the genre. Tianxia strikes me as a worthy successor to Weapons of the Gods.
(And yes, I know about the WOTG successor Legends of the Wulin - and have it in PDF - but if I can't ever get a hard copy in my FLGS, then what good does it do me?)
It's set in an ur-China, which is intended to make it easier for someone who is not an expert on Chinese history to run the game. But you could always pick up Alephtar Games' wonderful Celestial Empire supplement for Basic Role Playing to add more of that interesting and gameable historical detail. Or if you are on a budget, just read author Gianni Vacca's erudite Celestial Empire blog for a regular dose of additional gaming background and inspiration.
For our part, we're trying to persuade a friend to join us in co-creating a shared world province suitable for troupe-style Tianxia play. We're also considering creating a space operatic martial arts Legion for our Empire setting:
The Legion That Flies Into the Face of Death
Sounds good to me.