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"For example, almost 10 times faster than 4G, 5G supports more types of services and a wider range of applications. However, 5G may be a double-edged sword for security. On the one hand, intelligent monitoring will be achieved in the 5G era which will help improve the network security defense level. On the other hand, 5G may also bring new online risks, making it possible to see more cyberattacks," Wu said.

"For COVID-19, this is especially pertinent," Ho said, noting that in addition to many uncertainties about the virus, the impact goes beyond the disruption to normal life, both financially and socially. As a sudden and stressful event, more acute reactions are associated with the pandemic than with general mental health issues, Ho said.

"Food is absolutely indispensable to the masses. And food' is also a key ingredient of the Belt and Road Initiative," Calvin Yip, chairman of the organizer BRIFE Committee said at the opening ceremony of the expo, pointing out that most of the countries and regions involved in the Belt and Road Initiative are attaching an importance to the development of agriculture and food industry.

"Having children seems to be a private matter for a family, but the quantity and quality of the population is key for a country's long-term development," said Yuan Xin, a professor at Nankai University.

"For the half of the students at NYU Shanghai who are Chinese nationals, travel restrictions and visa and immigration issues were impediments to their studying elsewhere," Kwon said, so the students have resumed class remotely this week.