The sharp outlines of high-rise buildings stand beneath a clear blue sky in Baotou, located in North China's Inner Mongolia autonomous region, on Feb 8. The city's number of days with excellent and good air quality this year had reached 29 as of Feb 8, thanks to the city's proactive environmental protection efforts. [Photo/Baotou Evening News]

A Ferris wheel called the Baotou Eye dominates the parkland area, on Feb 8. [Photo/Baotou Evening News]

The piercing blue sky in Baotou provides a background for an ice flower attached to a window, on Feb 8. [Photo/Baotou Evening News]

A child runs along a path, under the clear blue sky of Baotou, on Feb 8. [Photo/Baotou Evening News]