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"Guidance needs to change and needs to be clear that these nonmedical, nonsurgical masks are beneficial to the general public and should be worn when outside of the home," Robert Hecht, a professor of epidemiology at the Yale University School of Public Health, said in an article published Monday on politico.com.

"Harbin Institute of Technology was the first university in China to establish a major in composite materials. The first composite material factory in China was also built in Harbin," said Wang Rongguo, a professor at the School of Materials Science and Engineering at the university.

"For us, Alibaba remains the largest share asset," Son said.

"First, they are in no position to do so. Second, what they said makes no sense and third, they have no audience," Wang told reporters at a regular news briefing in Beijing.

"Going to NACTA and being able to study with those teachers and using those new skills in the upper level competition the following year was really a nice progression for me. I could feel myself growing both in my speaking and in my stage presence," she said.