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"Carl Wieman's appointment is not only because he is a physics Nobel laureate but also because he has carried out many innovations and brought many changes in education," said Chen Ningyu, general manager of Xueersi Online School.

"COVID-19 control and prevention in Beijing will probably become a long-term effort," Xu said at a news conference on Sunday.

"China is in the transition from a large nation to a strong nation in terms of civil aviation," Li Jun, chairman of the China Air Transport Association, said Wednesday.

"But that accounts for only 5 percent of our revenue, and we expect to double our sales this year in Russia," Ren said.

"Cases are increasing among older adults, particularly those aged 80 years and older who currently have the highest incidence rate, nationally. More and larger outbreaks are occurring in long term care homes, congregate living settings and hospitals, and spreading in indigenous communities and more remote areas of the country," Tam said.