A moment in time: Evolution of cooking methods
Residents of a Beijing hutong (above) carry gas cylinders for cooking in this picture from 1997.
But a decade or so later, the choices for those who cooked included electromagnetic cookers seen at a store (right) selling household electrical appliances in Nantong, Jiangsu province, in 2009.
The Chinese get more inclined to buy ovens and cookers that are portable, safe and green.