(The Economist) CHINAS ECONOMY is slowing again. After a good start to the year annual growth slipped to 6.2 in the second quarter the countrys weakest expansion in nearly three decades. But that is hardly cause for panic. For an economy now worth nearly $14trn such a growth rate is impressive. As the trade war with America hurts exporters it also underlines the extent to which Chinas economy is now fuelled by domestic demand. The question for the coming months is whether that domestic strength will remain sufficient to offset the trade turmoil.