The spokespersons for delegations from Beijing, Tianjin, Hebei, Shanxi, Inner Mongolia, Liaoning and Jilin to the 20th National Congress of the Communist Party of China meet the press during a group interview in Beijing, Oct 18, 2022. The press center for the 20th CPC National Congress hosted its first group interview on Tuesday. During the interview, the spokespersons introduced the delegations' study and discussion on the report to the 20th CPC National Congress, and answered questions from journalists. [Photo/Xinhua]

Editor's note:Delegations to the 20th CPC National Congress have appointed their spokespersons, and starting Tuesday, these spokespersons meet with journalists for group interviews. Here are the highlights from Tuesday's interviews.

Zhao Lei, member of the Standing Committee and secretary-general of the CPC Beijing Municipal Committee. [Photo/Xinhua]

Zhao Lei, member of the Standing Committee and secretary-general of the CPC Beijing Municipal Committee

Beijing's average concentration of PM2.5 has declined to 29 micrograms per cubic meter so far this year after the capital made great efforts fighting air pollution and improving the natural environment in the past few decades. The annual average concentration of PM2.5 declined to 33 micrograms per cubic meter in 2021, falling by 63.1 percent compared with the level in 2013. During that time, the city's forest coverage rate increased from 38.6 percent to 44.6 percent.