Professor Li Lin is also a champion of the low-carbon lifestyle.

Taking public transportation to work is part of her daily routine.

Li Lin works for the WWF, one of the world's leading conservation organizations. She showed us the promotional activities for encouraging a low-carbon lifestyle over the past years.

Her office uses energy saving lights, which are turned off when not needed. This has greatly reduced electricity consumption. Li Lin says small actions like this can mean a lot in terms of carbon reduction.

Another way is to double print the paper.

Profesor Li Lin, WWF Head of Conservation Strategy, said, "If you save one ton of paper, that is equivalent to one ton of energy used for producing the paper, that will translate into a reduction of about two and a half tons of CO2. "

This booklet produced by WWF offers guidance for a low-carbon lifestyle. There are 30 ways to save energy, and the booklet covers everything from why to save, what to eat, how to travel, and how to calculate savings.

Li said, " All the efforts translated into saved nature, saved the habitat for human as species, together with other species, and we would avoid the negative impact of global warming."

Although there has been much talk about climate change in China, not everyone understands the low-carbon lifestyle.

"Low carbon? "

"I really don't know."

Policy makers should also play a role.

For example, central heating is supplied by thermal power stations, the majority of offices use non-adjustable heating system, which has lessened users' willingness to save energy.

As global warming becomes a mounting challenge, low-carbon development is considered to be the best way forward in the long term. Despite increasing efforts by the government to promote the low-carbon lifestyles, it might continuesly remain just a trend within certain groups, and not for all Chinese.