Weather record of 20 14 in Beijing

"APEC Blue" is a popular word to describe the blue sky in Beijing during APEC week. How strongly we want "APEC Blue" to become "Forever Blue"! But in the photo, it was a gray day with foggy weather. Pedestrians on the road wear masks and have difficulty breathing. But there are still so many cars on the road. People in the car may not wear masks, I think. The main cause of bad weather is man-made pollution. What should we do to protect the environment. We should advocate green travel and give priority to public transportation. We can go to work by bike. More importantly, we should use less plastic bags. Only in this way can we make our own efforts to build a blue sky again.