There is a Cantonese saying that the Chinese eat everything that flies, except aeroplanes; everything with four legs, except tables; and everything that swims, except submarines - and visitors to Beijing's fast-food market during the Olympic Games will be left in no doubt of that.
A stroll among the food stalls of Wangfujing Snack Street, not far from Tiananmen Square, reveals delicacies of every conceivable kind.
