5. APEC Blue

The expression took off with the public after the APEC meetings, referring to the amazing, albeit temporary, blue skies over Beijing. It reflected the longing of people for clean air instead of smog. With the joint efforts conducted during the first days of November proving effective, we can insist on continued efforts to make the blue sky stay longer.

－Xie Shaodong, professor at Peking University's School of Environmental Sciences