December 9, 2021
Last year, Beijing enjoyed 276 days of good air quality, an increase of 36 days from 2019, data from the bureau revealed.
Last year, Beijing enjoyed 276 days of good air quality, an increase of 36 days from 2019, data from the bureau revealed.
December 9, 2021
Last year, Beijing enjoyed 276 days of good air quality, an increase of 36 days from 2019, data from the bureau revealed.