By Wei Yao
This past winter, Beijing and the entire northern part of China were repeatedly blanketed by thick haze, raising serious concerns among citizens and the government. Air quality in Beijing has mostly stayed above “very unhealthy” and “hazardous” levels. Therefore, how to clean up the sky became one of the most important subjects for the delegates at China’s annual National People’s Congress (NPC). As a photojournalist based in Beijing, the moment I was told I would be able to cover the NPC, I decided to shoot a series of photographs to illustrate this matter.