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The number of domestic trips to be made in the holiday is estimated to be over twice the number of that made in the three-day Tomb-sweeping Day holiday in April, said major online travel agencies in China.

The Chinese president expressed his gratitude for the active efforts Russia has made for Chinese nationals in Russia, saying he believes that Russia will, as always, protect Chinese nationals' normal work and life on its soil.

Xi recalled that at the extraordinary leaders' summit of the Group of 20 major economies a few days ago, he urged the international community to step up action, effectively carry out collective prevention and control, resolutely contain the spread of the epidemic, and particularly work together to help developing countries with weak public health systems to enhance preparedness and response.

The meeting stressed reforms of institutional mechanisms to boost scientific and technological innovation capacity as well as the capacity to cope with emergencies.

Efforts should be made to speed up the development of COVID-19 vaccines and ensure their quality at the same time, Li said, adding that the country should strengthen international cooperation in vaccine development.