Jade city

In this World Fantasy Award-winning novel of magic and kungfu, four siblings battle rival clans for honor and power in an Asia-inspired fantasy metropolis. 
*Named one of TIME's Top 100 Fantasy Books Of All Time
​* World Fantasy Award for Best Novel, winner
Jade is the lifeblood of the island of Kekon. It has been mined, traded, stolen, and killed for — and for centuries, honorable Green Bone warriors like the Kaul family have used it to enhance their magical abilities and defend the island from foreign invasion.
Now, the war is over and a new generation of Kauls vies for control of Kekon's bustling capital city. They care about nothing but protecting their own, cornering the jade market, and defending the districts under their protection. Ancient tradition has little place in this rapidly changing nation.
When a powerful new drug emerges that lets anyone — even foreigners — wield jade, the simmering tension between the Kauls and the rival Ayt family erupts into open violence. The outcome of this clan war will determine the fate of all Green Bones — and of Kekon itself.
Praise for Jade City: 
"An epic drama reminiscent of the best classic Hong Kong gangster films but set in a fantasy metropolis so gritty and well-imagined that you'll forget you're reading a book." —Ken Liu, Hugo, Nebula, and World Fantasy Award-winning author
"A beautifully realized setting, a great cast of characters, and dramatic action scenes. What a fun, gripping read!" —Ann Leckie, Hugo, Nebula, and Arthur C. Clarke Award-winning author
"An instantly absorbing tale of blood, honor, family and magic, spiced with unexpectedly tender character beats." —NPR
The Green Bone Saga
Jade City
Jade War
Jade Legacy