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When displaying his final product, he showed the results of the graduation project in different situations.
Xi stressed that the Chinese people's hard work has won precious time for and made important contributions to other countries' epidemic prevention and control.
In addition, China supports platform enterprises to provide diversified services and lower costs of goods for small and medium-sized firms to help them tide over difficulties, it said.
"The COVID-19 epidemic has brought us new challenges, but we are confident in the Chinese market in the long term and will continue to invest here," Sun said.
BEIJING, March 29 (Xinhua) -- Chinese health authority said Sunday it received reports of 45 new confirmed COVID-19 cases on the Chinese mainland on Saturday, of which 44 were imported.
来源：资阳报