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"During the most severe period of COVID-19 in the first quarter and after the Chinese New Year, the top three airlines lost about 100 million yuan each per day. But since the second quarter, things have improved thanks to the effective measures to contain the contagion in China," said Chen Zhuo, a senior analyst with China Merchants Securities.

"Due to the influence of cold air from the west, atmospheric conditions to diffuse pollution in northern parts, including the Beijing-Tianjin-Hebei province cluster and the Fenhe-Weihe Plain region, will not worsen and will stay the same as the past five-year average," Jia Xiaolong, deputy head of the center, told a news conference on Wednesday.

"Even in past years, we've seen a lot of online shopping on Thanksgiving," she said. "This year we saw even more."

"During the pandemic people have faced a lot of pressure as they worry that they or their relatives may become infected or lose their jobs because of the economic slowdown. In these circumstances music can play a positive role."

"Education to enhance safety awareness should be provided to students, and legal aid and psychological counseling services should be offered to those in need," he said.