If BTCChina is dead then why the volume is quite high (~100BTC/hour) there?
Check the 1d charts for last 6-8 months at bitcoinwisdom.com, compare volumes of BTC-China, Huobi, OKCoin.
* BTC-China was dominant in China through 2013. It had ~13 kBTC/day in October, then ˜60 kBTC/day until ~Dec/20. After the "five agencies decree" they stopped yuan input/output through banks and switched to a voucher system; which apparently never worked because their volume fell to ˜5 kBTC/day or less. At some point they got a bank deposits/withdrawals working again, but never recovered their former volume.
* OKCoin started having substantial volume in November, ~40 KBTC/day (2/3 of than BTC-China). After the December decree they too (IIRC) stopped using banks for a short while, and their volume fell to near zero; but in January they got bank channels working again. Their volume recovered to ~20 kBTC/day and then in February rose to ~60 kBTC/day.
* Huobi started real volume in early November, with ~40 kBTC/day. After the December decree they continued using banks, and their volume then increased to the current ~60 kBTC. (Presumably they took most of the BTC-China clients.)
Fee policies also contributed to the picture -- Huobi did not charge fees, OKCoin eventually abolished theirs, BTC-China resisted for a while.
There were a few short periods when the volumes fell substantially in those Chinese exchanges, e.g. the Chinese New Year's week.
There were several other significant exchanges in China (FXBTC, BTC38, etc.) which may account for 30% of the Chinese exchange volume. Even without them, the total Chinese volume per day was about 80% of the World total.
In summary, BTC-China became insignificant after the December decrees (maybe 2-3% of the Chinese volume) and never recovered.
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