They are holding XCR because they are gamblers, not traders. Situation is as follows:

1. Most traders would either withdraw all coins from Bter or sell them for coins they can withdraw (BTC).
2. Traders who like huge risk would hold and bet on panic sale which means putting up buy orders very low, at 1 - 50 Satoshi, for up to 100 millions XCR.
3. Gamblers just hold. If you do not have any more BTC to put up buy orders that means you are gambler, period.