4.85pc.

China was the great saviour of the world economy in 2008. The launching of an unprecedented stimulus package sparked an infrastructure investment boom. The voracious demand for commodities to fuel its construction boom dragged along oil- and resource-rich emerging markets.

The Chinese economy has now hit a brick wall. Economic growth has dipped below 7pc for the first time in a quarter of a century, according to official data. That probably means the real economy is far weaker.

The People’s Bank of China has pursued several measures to boost the flagging economy. The rate of borrowing has been slashed during the past 12 months from 6pc to 4.85pc. Opting to devalue the currency was a last resort and signalled the great era of Chinese growth is rapidly approaching its endgame.

Data for exports showed an 8.9pc slump in July from the same period a year before. Analysts expected exports to fall only 0.3pc, so this was a huge miss.

The Chinese housing market is also in a perilous state. House prices have fallen sharply after decades of steady growth. For the millions who stored their wealth in property, it makes for unsettling times.