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"Economic development should not be achieved at the cost of the ecology. The ecological environment itself is the economy. Protecting the environment is developing productivity."

"During my two-week vacation, the investigating authorities did not contact me with any questions. I am sure that the investigation will put everything in its place and identify the true perpetrators of the violation of the law," he said.

"Evidence is pretty clear that the Chinese community showed great leadership. Many members of the community adopted measures such as self-isolation and face masks before they were mandated," said Peter Phillips, head of the infectious diseases division of the University of British Columbia School of Medicine.

"Cyber security is an ecological system and it needs both internal and external forces to maintain its health," Lan said. "Tencent has begun to strengthen internal supervision for its platforms like WeChat and QQ."

"Even if mobile phones are banned, if a teacher simply reads from the textbooks, students will still struggle to concentrate. The main factor in retaining students' attention is the quality of teaching," he said.