Without the usual smoggy days, local (resident) have been happy with the air quality since the heating season started. They open the window to air their homes. On social media, pictures of blue skies and white clouds (frequent) appear, (show) people's excitement about the clear days.
In Shanxi, major coal production province, burning coarse coal (粗煤)for heating used to be a main source of air (pollute). The government has been striving to change all this. It has launched a campaign to replace coarse coal clean fuels for heating since 2017.
More than 38 percent of the heating companies in Shanxi had applied advanced equipment with higher efficiency and (low) emission ( 排 放 ) by the end of 2019, (compare) with 25.5 percent at the end of 2017. It (believe) that the number can reach 50 percent by the end of this year, is the goal of the government.
