(25 Aug 1997) Mandarin/Eng/Nat The Tenth World Conference on Smoking or Health entered its second day on Monday in Beijing. Top of the agenda was smoking's rapid spread in developing countries such as China - where tobacco opponents face a lack of health education and a strong image that smoking is cool. Some 15-hundred health experts from more than 70 countries are taking part in the week long conference. Roughly one-third of the world's cigarettes are smoked in China. China has been praised