Photos
Smog chokes Beijing as spring travel rush starts January 16
- Strong winds disperse dense smog in Beijing November 4
- Harbin suffers from severe smog October 21
- Beijing witnesses clear sky October 16
- Fog, smog blanket Beijing March 18
- Beijing sees 'long-lost' blue skies February 1
- Many parts of China shrouded in dense smog January 14
- Dense smog engulfs Beijing May 6
