The coastal city of Xiamen in Fujian province ranked sixth among the 168 key cities in China in terms of air quality in the first six months of 2019, according to a July 9 report by the Ministry of Ecology and Environment.

Xiamen's air quality index gained 3.01 points from January to June 2019 after the city's authorities rolled out a raft of measures to prevent air pollution and protect its 100 days a year of blue skies in the city.

Xiamen has increased efforts on the optimization of industrial and energy structure and infused momentum into collaborative control of major pollutants.

The coastal city also has been listed the second place in 2018, and its effort of air pollution control guarantees a better ecological environment for local residents.

A hotel under a blue sky in Xiamen, Fujian province [Photo/IC]