The total trade volume today (Wednesday Mar/05 00:00-23:59 UTC) on the exchanges that I monitor was ~524 kBTC, on the same level as the previous two days, almost exactly one half of the peak on Feb/25.
Volume in the Chinese exchanges increased 16% compared to yesterday (from 422 to 490 kBTC). While Huobi decreased 27% (from 268 to 196), OKCoin jumped 108% (from 137 to 286) and surpassed Huobi by a large margin. Indeed today's volume at OKCoin was the second largest in its history. BTC-China and Bter fell by about 50%, and are still insignificant compared to the other two.
On the other hand, volume outside China fell 60% (from 85 to 34 kBTC). The decrements at the three largest exchanges were 55% at Bitstamp, 61% at BTC-e, and 67% at Bitfinex. Bitstamp is again the largest, but BTC-e is a close second, and Bitfinex a more detched third.
With these changes, the Chinese slice of the total volume rose to a historical record, 94%.