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"Do you know how cold -20 C is? Even machines cannot bear such cold. The computers cannot be turned on," said Chen Gang, an employee from China Mobile's Tibet autonomous region branch.

"Due to COVID-19 and social distancing requirements, shoppers were more purposeful in their in-person Black Friday shopping, causing significantly less crowds than we've seen in the past," said Brian Field, senior director of global retail consulting at Sensormatic. "This was compounded by retailers not offering as many in-store doorbusters and the increasing adoption of e-commerce."

"Every day of the Summer Olympics' schedule is almost fixed, while the winter schedule depends on accurate weather data to decide whether a competition will be canceled or not," he said.

"Earlier, many people did not trust Chinese products very much. Today the quality is rapidly rising, with Xiaomi, DJI and Huawei becoming prominent global brands, while several smaller brands have also been making their names," he said.

"Even though I had no opportunity to use any professional tools, I observed the sculptors carefully," he said.