China shuts markets after 30 mins as blue chips drop 7%

In a repeat of Monday's suspension, a circuit breaker introduced to curb volatility after last August's Black Monday sell-off kicked in after the CSI 300 dropped by 7%, suspending trading for the whole session after an initial 15-minute hiatus. China's renminbi also dropped 0.6%, hitting a five-year low, in morning trading to 6.5928 aginst the US dollar after falling by a similar amount on Wednesday. The second suspension in one week has led to criticism of the circuit breaker mechanism for making losses worse, as investors exit positions to avoid a trading halt. Policymakers appea...