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"Ensuring work safety is not a short-term task," he said. "It will take a long time for us to investigate various reasons behind the scenes, not just confined to training."

"Electric vehicles will play an increasingly important role in the demand for metals, including cobalt, lithium and nickel for batteries, copper for charging stations and aluminum for lightweight auto bodies," said Zhu Yi, senior analyst of metals and mining at Bloomberg Intelligence.

"Everybody's running around," she said. "It's scary."

"Digital media can promote sales based on analysis of audience behaviors and interests," said Shen Hao, a researcher with the State Key Laboratory of Media Convergence and Communication and professor of the School of Journalism of the Communication University of China.

"Despite the negative effects of the COVID-19 epidemic, the added value of Beijing's finance sector rose by 5.7 percent during the first six months, reinforcing its support for the city economy," he said.