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Anthony Fauci, the nation's top infectious disease specialist, has urged political leaders to "be as forceful as possible in getting your citizenry to wear masks".

Another example is Wang Jing, a researcher from the Chinese Academy of Agricultural Sciences, whose team invented new ways to efficiently detect toxic chemical residues on farm produce.

Another common concern — from Lyft drivers to longtime residents — is traffic. The D.C. region already has?some of the worst traffic in the nation — with a stretch of I-95 in Northern Virginia experiencing 23 traffic jams a day.

Anxiety was heightened by bleak projections from the Ministry of Human Resources and Social Security and the United Nations, both of which forecast that the decline will persist, with the working age population dropping to around 700 million by 2050.

Another must-have is a giant meatball known as shizitou, or the Lion's Head.