Playing with fire

In a couple of weeks’ time, David Cameron and George Osborne will arrive in China and witness at first hand an economic boom that is shaking the world. The British duo will doubtless receive a polite and outwardly respectful reception. But, as I discovered on a visit to Shanghai last week, Chinese diplomats and academics have noted the deep cuts in British spending — and they are drawing the obvious conclusions about the relative fortunes of the two nations.