Chinese exchanges still have the biggest volumes, China is still the biggest BTC market
No they dont.
No its not.

Thats the latest extrapolation after PBoC forced chinese exchanges to drop their pants down.
It's nice to know that Chinese volume was totally fake, I was able to get my hands of older version of the volume charts (30 days old to be exact).
For your viewing pleasure, witness the full extent of manipulation produced by Chinese exchanges in the past:
https://bitcoincharts.com/charts/volumepie/