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"Given that two accidents both involved the newly delivered Boeing 737-8 planes and happened during the take-off phase, they had some degree of similarity," China's Civil Aviation Administration said on its website, adding that the move was in line with the principle of zero tolerance for safety hazards.

"For example, models from international brands, even premium ones, do not work well in terms of voice recognition, especially when it comes to dialects. Chinese brands, in collaboration with local AI companies, have done a better job," Lu said.

"For a moment, my mind went totally blank," Zhao says. "I had small open wounds on my face."

"Fueled by the government's supportive policies, forward-thinking domestic internet and tech titans, the country's IoT sector has actually entered a new stage of rapid development over the past year," Cao Wenzhong, vice-president of the China Economic Information Service, told a news conference in Wuxi, Jiangsu province.

"From a long-term perspective, the scramble for homes in certain districts can be eased by ensuring all schools offer quality education and related services, and are located all over a city," said Sheng.