We now have remove all dependency from witness price feeds for the last 36 hours. We are now using our internal feeds(trader1000) for all prices. And had remove all feeds from bitshare witness, such as the one from witness.yao with 2.113 for usd/bts and 0.363 CNY/bts, which implies 5.58 USD to CNY rate. As I said before, this is open beta, so trade at your own caution. In additional, I have re-stake the demo(demo-trader) account with 12k CNY. Although i do not grantee the accuracy of the feed, i do put my money on it and trade on it.