The Shanghai Composite is being sold down hard after the open, impacting on the AUD/USD:

Intraday (3 minute) Shanghai Composite:

Intraday (3 minute)  Shanghai Composite 24 February 2014

Intraday (3o minute) Shanghai Composite:

Shanghai composite getting sold heavily 24 February 2014 2

China property prices data the cited catalyst for the selling & also rumours that one of China’s biggest commercial banks (said to be industrial Bank) has tightened lending to the real estate sector.