Xi made the remark in a congratulatory letter sent to the fifth national congress of self-employed workers, which opened in Beijing on Monday.
Xi voiced China's staunch support for free and inclusive trade at the Boao conference, saying globalization is in line with the common interests of all countries.
Xi expressed gratitude for Guelleh's congratulatory message on the success of last month's 19th CPC National Congress and his re-election as general secretary of the CPC Central Committee.
Xaychalern Kongken of Laos said he will return home to teach at a college after graduation.
Xi's announcement of the measures received positive responses and praise from the international community, he said, adding that many foreign leaders and heads of international organizations present at the forum agreed that China has already sent a clear message and it's time for the US to respond.
Wuhan in Hubei province, the city hit hardest by the novel coronavirus pneumonia outbreak on the Chinese mainland, resumed operations of its subways on Saturday after a suspension of more than two months due to the epidemic.
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Xi said in a meeting with German Chancellor Angela Merkel that the Chinese market is large, and will become even larger with its development, which will bring about more opportunities for countries including Germany.
Xi also visited the province's government affairs data center on Friday.
Wuhan, capital of Hubei province, is a fertile land for digital trade with its advantages of market, production factors, science and education, Lu Yong, vice chairman of the All-China Federation of Industry and Commerce, said at the event.
Xi made the remark while meeting with Klaus Schwab, founder and chief executive of the World Economic Forum, at the Great Hall of the People in Beijing.