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Because of travel restrictions during COVID-19, many overseas guests attended the event online via videoconference.

Beijing has been increasing its testing capacity since the epidemic started in January.

Before the introduction of the travel ban, the State Department had for long strongly warned Americans against travelling to the DPRK.

Beijing, home to over 21 million people, is trying to curb population growth and relocate industries and other "non-capital functions" to Hebei in the coming years as part of its efforts to cure severe "urban ills."

Beijing's disease prevention and control center has begun making technical proposals that strengthen the monitoring and assessment of smoke-free environments. It has also made efforts to exchange tobacco-control experiences with institutions such as disease control centers and health education centers in Tianjin and Hebei.