Share trading in China has been suspended after the markets plunged more than 7%. It’s the second time this week that falling prices triggered the so-called ‘circuit breaker’ mechanism, introduced on Monday. Investors are spooked by the depreciating yuan and disappointing manufacturing data. Moves by the Chinese Central Bank are fuelling fears that the world’s second largest economy is slowing down. Brent crude prices have also hit new 11-year lows due to concerns about oversupply.