It has been propagandized time after time that there should be no smoking allowed in all indoor public places. For the statistics indicate that more than one million smoking–induced deaths take place in China each year. On the other hand, the government and the tobacco industry benefit greatly from manufacturing and selling cigarettes. Without forbidding the production and trade in tobacco by law, how can smoking be prohibited effectively? Smoking customers usually ignore the signs of banning smoking in hotels continuing their bad habit in spite of the protest of the non－smokers there. On such occasions, the bosses and servants would turn a blind eye to the smokers. In offices, who would risk offending his smoking colleagues by stopping them？The non－smokers tend to adopt an attitude of tolerance.