Yes! Air China has been keeping a safe flying record for more than 20 years (I think), and I know the China Southern is using some of the most modern plane in this planet, 777, A330, 737,.......

When I once flied with the China Southern economy from inland China to HK, I am thrilled that they served hot buns(with little bits of cereal on top) with their meal, I am sure that this won't happen to any of the Amercian or Western airline to serve hot buns in the economy cabin