One of the disappointing facts about China has been the apparent race to be the number one country for cigarette smoking. The current statistic is that the each adult in China smokes an average of 6 cigarettes a day putting the country as number 9 - below Russia on a per capita basis but due to China's population that puts the country on top of the table for total tobacco consumption. That for the year 2009 amounts to 2,640,000,000,000 cigarettes (yes 2.64 trillion!). About 60% of men smoke but only 4% of women in China.
Government efforts to curb smoking have not been entirely successful. Restaurants and other enclosed places had a ban some years ago. Now (November 2016) the government is enacting legislation to ban smoking in most public places. A fine of 500 yuan can be imposed for smoking in public parks, near children and near historic monuments.
It is likely that the new law will be widely flouted until the ban is combined with public health campaign to convince the 300 million smokers to give up. Personally speaking I have become so sensitive to smoke that I find it unpleasant when wafted on the breeze from a hundred yards away, so traveling in China can be rather tricky.