Didi Kuaidi, China's ride-hail service, has gotten extremely steep growth for its service (5X that of Uber). This could be attributed to both being in the world's largest taxi market and the increased ease of following the footsteps of its competitor, and fellow EXO, Uber.
It took Uber five years to get to a billion rides, and its Chinese rival just did it in one
Uber announced with some fanfare several weeks ago that it had completed a billion rides worldwide since its launch in 2009. Today that news seems downright quaint compared to the recent announcement from China's biggest ride-hail service, Didi Kuaidi: 1.43 billion rides in 2015 alone.