br Global markets are facing a crisis and investors need to be very cautious,billionaire George Soros told an economic forum in Sri Lanka on Thursday. br Global markets are facing a crisis and investors need to be very cautious, billionaire George Soros told an economic forum in Sri Lanka on Thursday. China is struggling to find a new growth model and its currency devaluation is transferring problems to the rest of the world, Soros said in Colombo.