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"Collecting materials, such as product advertising, transaction messages and chat records with sellers as evidence is also a necessity," she added.

"Compared with other similar products, Lingo Bus has an edge in terms of the content as well as teachers," said Su.

"Cross-infection is the main cause of the epidemics, especially at schools and in enclosed areas."

"China's venture capital firms have already invested heavily in consumer-oriented businesses over the past 10 years. It's high time they better tap into opportunities brought by the enterprise market. And the investment in robotics technologies, such as a variety of sensors, can help fuel the emergence of 'little giants'," Ren said.

"Chinese science-fiction and fantasy novels such as Liu Cixin's The Three-Body Problem and Jin Yong's A Hero Born sold strongly," said the British daily newspaper.