"No matter what life throws you, you've got to eat," is Wan Zuocheng's motto.  Wan and his wife, Hong Gengxiang, have been recognised as "China's Role Models" by the country's state broadcaster. The couple run a back-alley kitchen that is located close to a hospital that treats cancer patients in Jiangxi province. For just three yuan, patients and their relatives can use the kitchen facilities to make home-cooked meals rather than eating from the hospital canteen. Many people who use the…