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"Even if my works change the mindset of only a couple of people, my efforts are worthwhile," he said.

"Different universes" are meeting as traditional carmakers find high-tech firms like Google or Alibaba, mobility services firms like Uber and Didi and even telecoms firms racing to set industry-wide standards.

"Cybersecurity is the top challenge for the industrial internet, which is entering the fast lane in China, and more efforts are needed to better solve the problem," Qi said.

"Early detection and isolation is significant in containing the epidemic," said Chai Xiangfei, CEO of Huiying Medical. "Based on the data from tens of thousands of epidemic-related cases in the past two months, our AI screening model can be of great help to doctors."

"Everything looked so sad to me — the color of the sky, the shade of the trees and the deserted streets. I thought the day must remain in the history of China as the day of sorrow," he wrote in his diary.