“The Shanghai and Shenzhen exchanges said in separate statements on Monday night that new rules, effective immediately, banned traders from borrowing and repaying stocks on the same day – a step that raises risks for short-sellers. Many fund managers say the campaign against shorting has decayed into a general crackdown on risk management strategies, which could backfire. China’s state margin-lending agency has injected 200 billion yuan ($32.21 billion) since July into five newly launched mutual funds. The China Securities Finance Corp is also managing a 120 billion yuan bailout fund formed by 21 brokerages, and last month provided 260 billion yuan in credit lines to brokerages.”
http://www.reuters.com/article/2015/08/04/us-china-markets-shorting-idUSKCN0Q909E20150804