Instead of telling us something new about smog, a result of serious air pollution caused by pollutants from both the use of fossil fuels and motor vehicle exhausts, a documentary self-produced by former TV anchorwoman Chai Jing gives some insight into how to solve the problem.

Few Chinese who have long been bothered by the country's heavy smog disagree that air pollution is so serious that something urgently needs to be done to address it. And both the central and local governments have vowed to make all the efforts they can to reduce air pollution.

Yet, both individuals and the governments at all levels attach much more importance to rhetoric about how important it is to tackle air pollution than the emphasis they place on specific actions to address it.