Day 2 (Sep. 8, Tuesday) Parallel Technical Sessions 1

　　Theme: Impact and Implications of the COVID-19 Pandemic on Air Quality

　　Introduction:

　　Focusing on the impact and implications of the COVID-19 pandemic on air quality and its enlightenment, the Forum has invited experts and scholars from California, Paris, Lombardy, Tokyo and Seoul, etc. to share and exchange ideas and opinions on the impact and implications of the COVID-19 pandemic on air quality, as well as the monitoring results, monitoring methods, assessment methods and control measures of PM2.5, O3 and ozone precursors.