Looks like China's bubble may have burst.
China's stock markets plunged on Thursday, with indexes dropping over 6 percent in record high turnover as investors rushed to sell after more brokers tightened margin trading requirements for clients and the central bank drained money market liquidity.
http://www.reuters.com/article/2015/05/28/us-market-china-stocks-idUSKBN0OD0S220150528